Nest mass variation over the nesting cycle in the Pied Flycatcher (Ficedula hypoleuca)
|
|
- Ellen Johns
- 6 years ago
- Views:
Transcription
1 The following text is a post-print version of the article: Nest mass variation over the nesting cycle in the Pied Flycatcher (Ficedula hypoleuca) Anna Dubiec and Tomasz D. Mazgajski Avian Biology Research Volume: 6 Issue: 2 Pages: DOI: / X Published: MAY 2013 The paper has been published in the final form at:
2 Nest mass variation over the nesting cycle in the Pied Flycatcher (Ficedula hypoleuca) Anna Dubiec and Tomasz D. Mazgajski* Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, Warszawa, Poland *Corresponding author: ABSTRACT Nest parameters are most commonly measured only once during the nesting cycle. However, the condition of a nest is not constant but can substantially change from one nesting stage to the other, especially between incubation and nestling periods. These temporal changes may drive modifications in nest characteristics. We investigated the change in nest fresh mass between the early stage of incubation and shortly after the nestlings fledged and examined whether nest dry mass measured after the completion of the nesting cycle, which is commonly used in avian studies, is correlated with initial and final nest fresh mass in a small migratory passerine the Pied Flycatcher. Nest fresh mass after the nestlings fledged constituted 180% of the initial fresh mass and the magnitude of mass increase was dependent on the number of fledglings and probably was partly associated with increasing water content in nesting material. Nest dry mass was strongly correlated with nest fresh mass measured both at the beginning of incubation and after the nestlings fledged, and also with the number of fledglings. Because in the Pied Flycatcher changes in the nest fresh mass are dependent on brood characteristics, in order to obtain the most reliable estimate of the initial nest fresh mass, we recommend weighing the nest shortly after its completion, taking care to make the measurement when the humidity of the habitat is rather low. Keywords: Ficedula hypoleuca, fledgling number, nest mass, nest water content 1
3 1. INTRODUCTION In most bird species nest building is an important component of the nesting cycle. Currently most research interest in this stage of the nesting cycle is driven by exploring the mechanisms behind the considerable variation in nest characteristics at the intra-specific level (e.g. Tomás et al., 2006; Álvarez and Barba, 2008; Mainwaring et al., 2008) as well as estimating the costs of nest construction and its role in shaping life-history trade-offs (Mainwaring and Hartley, 2009; Moreno et al., 2010). In both cases, recording of parameters describing the nest, such as its total size or composition, is essential. In most studies, data on nest characteristics are collected only at a single point during the nesting cycle. However, conditions to which a nest is exposed are not constant, but substantially change from one nesting stage to the other, especially between incubation and nestling period. Consequently, these changes may promote modifications in nest characteristics. For example, nest cup size increases between the incubation and nestling period and in some species may be even 40% wider after than before egg hatching (Slagsvold, 1989) and nests, especially those built of soft material, may become flatter after the start of incubation and later due to nestling activity (Slagsvold, 1989; Lambrechts et al., 2012). Therefore, information on the pattern of such changes may be necessary for proper interpretation of studied phenomena. Mass is the most commonly measured parameter of the nest, which may be used as a reliable estimate of an overall nest size (e.g. Tomás et al., 2006; Mainwaring et al., 2008). It is most frequently measured after the completion of the nesting cycle ( e.g. Alabrudzińska et al., 2003; Mainwaring et al., 2008; Broggi and Senar, 2009). Such timing is probably driven by limitations of earlier measurements associated with possible disturbance of nests with delicate architecture. Generally, only nests that have a rather compact structure, e.g. of Great Tits ( Parus major) and Blue Tits ( Cyanistes caeruleus), may be weighed throughout the whole nesting period during egg laying ( Tomás et al., 2006), incubation (Álvarez and Barba, 2008) or a few days after nestlings hatched (Tomás et al., 2006) without affecting its structure. However, if changes in nest mass over the nesting cycle are not independent of nest/brood characteristics such as the presence of nest-dwelling arthropods or brood size, such estimates may be prone to some bias. Nest fresh mass may be expected to increase with the progress of the nesting cycle as a results of several non-mutually exclusive processes: (1) a continuous supplementation of nesting material, either with the structural material (Vergara et al., 2010), nest lining components such as feathers (McCarty and Secord, 1999) or extra material not considered to 2
4 be a proper part of the nest (e.g. green plant material, Lambrechts and Dos Santos, 2000), (2) accumulation of various remnants like prey remains and faeces, and 3) changes in humidity/ water content of the nest (Kern and Cowie, 1995). To eliminate variation in nest mass due to the presence of remnants and different levels of humidity/water content, all material not constituting part of the nest is typically removed and the nest is dried at high temperature until a constant mass is reached (e.g. Heeb et al., 2000; Broggi and Senar, 2009; Mainwaring and Hartley, 2009). Despite the strong prerequisites for temporal changes in nest mass, the information on this phenomenon is very scarce (McCarty and Secord, 1999; Tomás et al., 2006; Vergara et al., 2010). In the present study, we examined the variation in nest mass in a small migratory passerine the Pied Flycatcher ( Ficedula hypoleuca) which builds the nest of dry leaves, flakes of bark, moss, roots and grass (Lundberg and Alatalo, 1992). Specifically, we investigated the change in nest fresh mass between the early stage of incubation and shortly after the nestlings fledged, and studied whether this change is associated with brood characteristics (fledgling number) and environmental conditions (rainfall). Moreover, we examined whether nest fresh mass measured at different stages of the nesting cycle is correlated with nest dry mass, which is primarily measured after the nestlings fledge. We suggest that if changes in nest mass over the nesting cycle are consistent and independent of clutch/brood and environmental characteristics, only one measurement taken at any given time of the nesting cycle would be sufficient as a reliable estimate of an overall nest mass. 2. METHODS 2.1. Study area Data were collected in a small (up to 17 pairs per year) nest box breeding population of the Pied Flycatcher located 10 km west of Warsaw (52 05 N, E) in a ca. 50-year-old pine forest with no natural breeding sites for hole nesters. The population has been followed from 2005 (except for 2007 and 2008), when the nest box colony, consisting of ca 40 nest boxes was set up. During the breeding seasons of 2011 and 2012, when the data for this study were collected, there were 156 and 188 available nest boxes (floor: cm, depth: 21 cm, entrance: 3.2 cm), respectively, positioned in a grid of m and ca. 2.5 m above the ground. For the purpose of another project, each year ca 50% of nest boxes was equipped with a wooden insert at the bottom, which decreased the depth of the box by 5 cm. In both study years, all Pied Flycatcher nests were built in boxes with the insert. The front wall of the 3
5 box is detachable, which allows easy handling of the nest. Nest boxes are primarily occupied by Great Tits and Pied Flycatchers, and occasionally by Blue Tits. After the completion of the breeding season nest boxes were cleaned of remaining nesting material General procedures Starting from the middle of April nest boxes were checked every few days to record laying date (date when the first egg was laid), clutch size, hatching da te, the number of hatchlings and fledglings. When more than one egg was found in the nest, the laying date was backcalculated assuming that one egg was laid per day. In the case of one nest with unknown laying date, time of clutch initiation was calculated based on known hatching date (day = 0) and clutch size and assuming the incubation length of 14 days (Lundberg and Alatalo, 1992). Adult birds and nestlings were ringed with a metal numbered ring, nestlings on day 13 posthatching and adult birds while caught during nestling feeding. In the study area, Pied Flycatcher nests are not very compact, especially during early stages of the nesting cycle, which may cause the disturbance of their structure during the process of extraction from the nest box (own observation, but see Moreno et al. (2009) for the structure of Pied Flycatcher nests in central Spain). To overcome this problem, before each breeding season all nest boxes had a transparent plastic liner (wall height: 5 cm, thickness: 0.2 mm) inserted at the bottom. Such a liner allowed us to remove the nest for weighing and taking measurements without destroying its shape and structure. Similar, but cardboard liners were used by McCarty and Secord (1999) in a study of the Tree Swallow ( Tachycineta bicolor). However, contrary to cardboard, plastic liners do not change the mass due to moisture. In order to allow air circulation, the walls and the bottom of the liner were very densely perforated with a drill (the diameter of the hole 6 mm). Before being inserted into the nest box each liner was weighed to the nearest 0.1 g with a portable electronic balance and later its mass was subtracted from the total mass of the nest and the liner. Nest mass was measured twice during the nesting cycle: shortly after the start of incubation (2 4 days after the clutch completion) and shortly after the nestlings fledged. The liner with the nest was taken out from the box and, after the removal of eggs, weighed to the nearest 0.1 g with an electronic balance. Before the nest was weighed after the nestlings fledged, all materials that were not the part of the nest (dead nestlings, faeces, unhatched eggs, food remnants) were removed. After this measurement nests were transported in plastic bags to the laboratory and placed for at least 48 hours in Tullgren funnels using 60-W electric bulbs as a heat source to extract ectoparasites (data not presented) and weighed again. 4
6 Because of the exposition to heat, placement of nests in Tullgren funnels may be considered as an equivalent of nest drying at high temperature (until the nest mass remains constant) employed by other studies (e.g. Broggi and Senar, 2009; Mainwaring and Hartley, 2009). Due to a rather low frequency of nest checking (every few days), we cannot exclude that in some cases Pied Flycatcher nests were built on nest material supplied earlier by tits. However, since in most cases tits place only small amounts of nesting material (mostly moss) if they do not later occupy a given box (own observations), this additional material can be neglected while estimating the size of the Pied Flycatcher nest. Two flycatcher nests built on top of tit nests with eggs were excluded from the analyses. Only successful nests, i.e. those in which at least one young fledged, were used in the analyses. Meteorological data from Warszawa-Okecie meteorological station located 9 km from the study site were obtained at Since Slagsvold (1989) demonstrated that water content of Pied Flycatcher nests decreases rather rapidly and nests with water content of over 70% may almost completely dry out (at room temperature with air humidity of ca 30%) within 3 days, we assessed whether changes in nest fresh mass may be associated with the humidity of the surrounding habitat reflected by the total rainfall within 3 days preceding the measurements Statistical analyses Two females nested during both breeding seasons, each time with a different male. To meet the assumption of independent sampling, only one breeding attempt was selected for the analyses. The effect of year on clutch characteristics, nest fresh and dry mass and total rainfall within 3 days preceding the measurement of the nest fresh mass was tested with t test or Mann-Whitney U test (in case of variables, in which transformations failed to normalise its distribution or the assumption of equality of variances was violated). The effect of humidity in the surrounding habitat on the change in nest fresh mass was tested with ANOVA with a two-level factor describing humidity: total rainfall during 3 days preceding the measurement equalling 0 and above 0. The associations between nest mass/changes in nest mass and other variables were tested with Pearson s correlation coefficient. Sample sizes differ between the analyses, because not all data were collected for each nesting attempt. Three nests, in which one egg was broken during handling, were included in the analyses since hatching success was not in the focus of this study. The analyses were performed in Statistica ver. 7.1 (StatSoft 2005). 5
7 3. RESULTS In 2011, Pied Flycatchers initiated the clutch on average 6 days later than in 2012, however, neither clutch size, the number of fledglings, nest mass nor total rainfall during 3 days preceding the nest fresh mass measurements differed between the breeding seasons (Table 1). Since we considered that the composition of nesting material and hence the properties of the nest would be similar in both years, and we focused on within-nest changes in mass, which should be dependent on specific weather conditions preceding the nest measurements rather than some general year-related effects, we pooled data from two breeding seasons. During early incubation nests weighed on average ± 7.83 (SD) g (n = 21, range: g) and shortly after the nestlings fledged ± g (n = 21, range: g). On average nest fresh mass increased between these two measurements by ± g (n = 21, range: ). The magnitude of this change was not affected by rainfall within 3 days preceding the second measurement (F 1, 19 = 1.779, P = 0.198). However, nests which fledged more nestlings gained more mass between these two measurements (r = 0.72, n = 20, P < 0.001, Figure 1), which could be at least partly attributed to accumulation of larger amounts of water (final nest fresh mass nest dry mass) in nests with large than with small broods (r = 0.54, n = 17, P = 0.024). Moreover, although the fledgling number was not associated with initial nest fresh mass (r = 0.13, n = 20, P = 0.594), it positively correlated with nest dry mass (r = 0.72, n = 17, P = 0.001). In response to drying in Tullgren funnels, nest material lost on average 8.82 ± 4.79 g (n = 18, range: ) and weighed ± g (n = 18, range: ). Nest dry mass was very strongly correlated with fresh mass measured after the nestlings fledged (r = 0.95, n = 18, P < 0.001) and strongly with fresh mass at the beginning of incubation (r = 0.76, n = 18, P < 0.001; Figure 2). The relation between dry and fresh mass was also assessed separately in groups of nests in which the measurement of fresh mass was preceded or not by rainfall. In the case of the fresh mass measured at early incubation, the correlation with nest dry mass was weaker when measurement was preceded by some rainfall (rainfall: r = 0.70, n = 12, P = 0.011, no rainfall: r = 0.92, n = 6, P = 0.010). Similar trend was observed for correlation between dry mass and fresh mass measured after the nestlings fledged (rainfall: r = 0.94, n = 13, P < 0.001, no rainfall: r = 0.99, n = 5, P < 0.001). 6
8 4. DISCUSSION Surprisingly few studies have looked so deeply into the pattern of changes in nest mass over the nesting cycle in birds. Scarcity of such data may be at least partly associated with a delicate nest architecture in many species, which makes it difficult to extract the nest without disturbing its structure. Use of a plastic liner allowed us to show that nest fresh mass after the nestlings fledged constituted 180% of the initial nest fresh mass. Interestingly, the magnitude of nest fresh mass increase was associated with the number of nestlings, which fledged from a given nest. Specifically, the more nestlings fledged, the more nest mass increased which could, at least partly, be attributed to higher amounts of water retained in nests with large broods. Moreover, nest dry mass measured after the completion of the nesting cycle was a very strong predictor of fresh mass after the completion of the nesting cycle and a strong predictor of fresh mass during incubation. Tomás et al. (2006) showed in the Blue Tit that nest fresh masses weighed during egg laying and on day 3 post-hatching were very strongly correlated, however, the authors did not provide data on the difference in mean mass between these two measurements and based the correlation on a very small sample size. McCarty and Secord (1999) found an increase in nest fresh mass with the progress of the nesting cycle in the Tree Swallow. The magnitude of this increase was rather low, which may be attributed to both relatively short time between two measurements (from the day when the first egg was laid until the day of egg hatching) and not including the nestling period, when changes in nest mass are probably most distinct due to the activity of nestlings. Since Tree Swallows add feathers to the nest until the early stages of the nestling period ( Lombardo, 1994), the increase in the total nest fresh mass may be at least partly attributed to new material deposited in the nest. In the Pied Flycatcher nest construction is completed before the onset of egg laying with little amounts of nesting material sometimes added on the day the first egg is laid (Stjernberg, 1974). Therefore, such process may not contribute to the observed changes in nest mass. In the Pied Flycatcher increase of the nest fresh mass over the nesting cycle is probably primarily associated with accumulation of water and dust in nesting material. Generally, water content in the nest may be affected by both abiotic (e.g. prevailing weather conditions) and biotic factors (e.g. nestlings and nest-dwelling arthropods). Since Pied Flycatcher nests in the study area contain only scarce amounts of mosses which are highly water absorbent, nests of this species are not expected to very closely reflect the humidity of the habitat (Eeva et al., 1994). In accordance with this assumption, water content in the nest was not associated with 7
9 total rainfall within a few days preceding the measurement. Nest water content in this species seems to be rather affected by biotic factors, specifically nestlings. We found that nests containing more nestlings accumulated more water. Such relation may arise if total metabolic turnover increases with brood size which, in turn, should result in higher evapotranspiration, possibly affecting the nest humidity (Heeb et al., 2000). Additionally, nests with large broods may retain more water extracted from food remnants and faeces, which quantity should depend on the number of nestlings. Brood size has been also found to affect nest humidity (measured as the total mass of water in the nest divided by nest dry mass) in the Great Tit (Heeb et al., 2000). Alternatively or in combination with brood size, nest water content may be affected by the presence of nest-dwelling arthropods, especially ectoparasitic ones. For example, in Great and Blue Tits high infestation with Protocalliphora blow fly larvae is often associated with wetter nests than usual (Heeb et al., 2000; Mennerat et al., 2009) and in the Great Tit nest humidity has been also found to be much higher in flea-infested than uninfested nests (Heeb et al., 2000). Consequently, if nests with large broods are inhabited by large number of ectoparasites, as has been shown for Great Tits (Eeva et al., 1994, but see Heeb et al., 1996), this could explain their higher water content. However, this mechanism may be much less important in the Pied Flycatcher than tit nests for two reasons. Firstly, in this species nest water content seems to be not associated with the infestation level with fleas and Protocalliphora larvae (Eeva et al., 1994) and secondly, the load of ectoparasites is independent of brood size (Eeva et al., 1994). In case of dust-associated changes in nest mass, they may be primarily linked with dust produced in the process of feather growth. In Great Tits and Blue Tits dust is the second heaviest component of the nest when measured after the completion of the nesting cycle and its amounts are positively correlated with the number of fledglings (Britt and Deeming, 2011). Since in this study mass of different nest components was not measured, we may not directly verify whether in the Pied Flycatcher dust contributed to temporal increase in nest mass. However, the positive correlation between the number of fledglings and nest dry mass, with a simultaneous lack of such association with initial fresh mass, may indicate that temporal changes in nest mass, which are unrelated to water content, are affected by the number of fledglings. Nest dry mass has been shown to be very strongly correlated with fresh mass after the completion of the nesting cycle. However, it was a less reliable, although still strong, predictor of the initial fresh mass. The humidity of the surrounding habitat seemed to affect 8
10 this association since the correlation was stronger when the fresh mass was measured following a few days without rain. 5. CONCLUSIONS In the Pied Flycatcher nest, fresh mass considerably increases with the progress of the nesting cycle. Importantly, the magnitude of this change is dependent on the number of nestlings leaving the nest. Nest dry mass is a strong predictor of nest fresh mass measured shortly after the completion of nest construction and after the nestlings fledged. However, since the changes in nest mass in this species are dependent on brood characteristics, specifically brood size, in order to obtain the most reliable estimate of the initial nest mass we recommend weighing the nest shortly after its completion, taking care to take the measurement when the humidity of the habitat is rather low. ACKNOWLEDGEMENTS We thank Iga Góźdź and Bartosz Matuszczak for help in the field. The study was financially supported by grant no. N from the Polish Ministry of Science and Higher Education/National Science Centre. REFERENCES Alabrudzińska, J., Kaliński, A., Słomczyński, A., Wawrzyniak, A., Zieliński, P. and Bańbura, J. (2003) Effects of nest characteristic o n breeding success of Great Tits Parus major. Acta Ornithol., 38, Álvarez, E. and Barba, E. (2008) Nest quality in relation to adult bird condition and its impact on reproduction in Great Tits Parus major. Acta Ornithol., 43, 3 9. Britt, J. and Deeming, D.C. (2011) First-egg date and air temperature affect nest construction in Blue Tits Cyanistes caeruleus, but not in Great Tits Parus major. Bird Study, 58, Broggi, J. and Senar, J.C. (2009) Brighter Great Tit parents build bigger nests. Ibis, 151,
11 Eeva, T. Lehikoinen, E. and Nurmi J. (1994) Effects of ectoparasites on breeding success of Great Tits ( Parus major) and Pied Flycatchers ( Ficedula hypoleuca) in an air pollution gradient. Can. J. Zool., 72, Heeb, P., Kölliker, M. and Richner, H. (2000) Bird -ectoparasite interactions, nest humidity and ectoparasite community structure. Ecology, 81, Heeb, P., Werner, I., Richner, H. and Kölliker, M. (1996) Horizontal transmission and reproductive rates of hen fleas in Great Tit nests. J. Anim. Ecol., 65, Kern, M.D. and Cowie, R.J. (1995) Humidity levels in Pied Flycatcher nests measured using capsule hygrometers. Auk, 112, Lambrechts, M.M. and Dos Santos, A. (2000) Aromatic herbs in Corsican Blue Tit nests: the Potpourri hypothesis. Acta Oecol., 21, Lambrechts, M.M., Aime, C., Midamegbe, A., Galan, M.J., Perret, P., Gregoire, A. and Doutrelant, C. (2012) Nest size and breeding success in first and replacement clutches: an experimental study in Blue Tits Cyanistes caeruleus. J. Ornithol., 153, Lombardo, M.P. (1994) Nest architecture and reproductive performance in tree swallows (Tachycineta bicolor). Auk, 111, Lundberg, A. and Alatalo, R.V. (1992) The Pied Flycatcher. T & A.D. Poyser, London. Mainwaring, M.C., Benskin, C.McW.H. and Hartley, I.R. (2008) The weight of female-built nests correlates with female but not male quality in the Blue Tit Cyanistes caeruleus. Acta Ornithol., 43, Mainwaring, M.C. and Hartley, I. (2009) Experimental evidence for state -dependent nest weight in the Blue Tit, Cyanistes caeruleus. Behav. Proc., 81, McCarty, J.P. and Secord, A.L. (1999) Nest -building behavior in PCB-contaminated tree swallows. Auk, 116, Mennerat, A., Mirleau, P., Blondel, J., Perret, P., Lambrechts, M.M. and Heeb, P. (2009) Aromatic plants in nests of the Blue Tit Cyanistes caeruleus protect chicks from bacteria. Oecologia, 161, Moreno, J., Merino, S., Lobato, E., Ruiz-De-Castañeda, R., Martínez-De la Puente, J., Del Cerro, S. and Rivero-De Aguilar, J. (2009) Nest-dwelling ectoparasites of two sympatric hole-nesting passerines in relation to nest composition: An experimental study. Ecoscience, 16, Moreno, J. Lobato, E., González-Braojos, S. and Ruiz-de Castañeda, R. (2010) Nest construction costs affect nestling growth: a field experiment in a cavity-nesting passerine. Acta Ornithol., 45,
12 Slagsvold, T. (1989) Experiments on clutch size and nest size in passerine birds. Oecologia, 80, StatSoft (2005) STATISTICA (data analysis software system), version Stjernberg, M. (1974) Nest -building by the Pied Flycatcher Ficedula hypoleuca. Ornis Fennica, 51, Tomás, G., Merino, S., Moreno, J., Sanz, J.J., Morales, J. and Garcia-Fraile, S. (2006) Nest weight and female health in the Blue Tit (Cyanistes caeruleus). Auk, 123, Vergara, P., Gordo, O. and Aquirre, J.I. (2010) Nest size, nest building behaviour and breeding success in a species with nest reuse: the white stork Ciconia ciconia. Ann. Zool. Fennici, 47,
13 Table 1. Between-year comparison (mean ± SD) of clutch characteristics, nest fresh and dry mass and total rainfall within 3 days preceding the measurement of the nest fresh mass in the Pied Flycatcher population from central Poland. Differences were tested either with t test or Mann-Whitney U test; n denotes sample size n 2012 n Statistics Laying date (day 1 = 1 May) 15.4 ± ± t 19 = 3.72, P = Clutch size 7.0 ± ± z = 1.23, P = Fledgling number 5.7 ± ± t 18 = 0.18, P = Incubation nest fresh mass (g) 28.9 ± ± t 19 = 1.15, P = Post-fledging nest fresh mass (g) 48.0 ± ± t 19 = 0.13, P = Nest dry mass (g) 41.6 ± ± t 16 = 0.68, P = Total rainfall (mm) (incubation) 3.8 ± ± z = -1.23, P = Total rainfall (mm) (post-fledging) 6.7 ± ± z = -0.14, P =
14 Figure 1. Increase in the nest fresh mass between the early incubation period and after the nestlings fledged in relation to the number of fledglings in the Pied Flycatcher. 60 Increase in nest fresh mass (g) Fledgling number Figure 2. Relation between post-fledging nest dry mass (measured after at least 48 hours in Tullgren funnels) and nest fresh mass measured at two points of the nesting cycle at the beginning of the incubation period and after the nestlings fledged in the Pied Flycatcher mass measured at incubation mass measured post-fledging 60 Nest fresh mass (g) Nest dry mass (g) 13
Adjustments In Parental Care By The European Starling (Sturnus Vulgaris): The Effect Of Female Condition
Proceedings of The National Conference on Undergraduate Research (NCUR) 2003 University of Utah, Salt Lake City, Utah March 13-15, 2003 Adjustments In Parental Care By The European Starling (Sturnus Vulgaris):
More informationVariation in Great Tit nest mass and composition and its breeding consequences: a comparative study in four Mediterranean habitats
AVIAN BIOLOGY RESEARCH 6 (1), 2013 39 46 Great Tit nest composition in Mediterranean habitats 39 Variation in Great Tit nest mass and composition and its breeding consequences: a comparative study in four
More informationDO DIFFERENT CLUTCH SIZES OF THE TREE SWALLOW (Tachycineta bicolor)
DO DIFFERENT CLUTCH SIZES OF THE TREE SWALLOW (Tachycineta bicolor) HAVE VARYING FLEDGLING SUCCESS? Cassandra Walker August 25 th, 2017 Abstract Tachycineta bicolor (Tree Swallow) were surveyed over a
More informationPerceived risk of ectoparasitism reduces primary reproductive investment in tree swallows Tachycineta bicolor
RESEARCH LETTERS Research letters are short papers (preferably 55 printed pages, about 4000 words), ideally presenting new and exciting results. Letters will be given priority, whenever possible, in the
More informationHole-nesting birds. In natural conditions great and blue tits breed in holes that are made by e.g. woodpeckers
Hole-nesting birds In natural conditions great and blue tits breed in holes that are made by e.g. woodpeckers Norhern willow tits excavate their own holes in rotten trees and do not accept old holes or
More informationBIRD ECTOPARASITE INTERACTIONS, NEST HUMIDITY, AND ECTOPARASITE COMMUNITY STRUCTURE
Ecology, 8(4), 2000, pp. 958 968 2000 by the Ecological Society of America BIRD ECTOPARASITE INTERACTIONS, NEST HUMIDITY, AND ECTOPARASITE COMMUNITY STRUCTURE PHILIPP HEEB, MATHIAS KÖLLIKER, AND HEINZ
More informationPair bond and breeding success in Blue Tits Parus caeruleus and Great Tits Parus major
Ibis (25), 147, 92 18 Blackwell Publishing, Ltd. Pair bond and breeding success in s Parus caeruleus and s Parus major MIRIAM PAMPUS*, KARL-HEINZ SCHMIDT & WOLFGANG WILTSCHKO Fachbereich Biologie der J.W.
More informationTree Swallows (Tachycineta bicolor) are breeding earlier at Creamer s Field Migratory Waterfowl Refuge, Fairbanks, AK
Tree Swallows (Tachycineta bicolor) are breeding earlier at Creamer s Field Migratory Waterfowl Refuge, Fairbanks, AK Abstract: We examined the average annual lay, hatch, and fledge dates of tree swallows
More informationFactors Influencing Local Recruitment in Tree Swallows, Tachycineta bicolor
Grand Valley State University ScholarWorks@GVSU Honors Projects Undergraduate Research and Creative Practice 2013 Factors Influencing Local Recruitment in Tree Swallows, Tachycineta bicolor Danielle M.
More informationBelow, we present the methods used to address these objectives, our preliminary results and next steps in this multi-year project.
Background Final Report to the Nova Scotia Habitat Conservation Fund: Determining the role of food availability on swallow population declines Project Supervisor: Tara Imlay, tara.imlay@dal.ca In the past
More informationThe Long-term Effect of Precipitation on the Breeding Success of Golden Eagles Aquila chrysaetos homeyeri in the Judean and Negev Deserts, Israel
Meyburg. B-U. & R. D. Chancellor eds. 1996 Eagle Studies World Working Group on Birds of Prey (WWGBP) Berlin, London & Paris The Long-term Effect of Precipitation on the Breeding Success of Golden Eagles
More informationDoes Egg Coloration Signal Female Quality to House Wren Males (Troglodytes aedon)? Research Thesis
Does Egg Coloration Signal Female Quality to House Wren Males (Troglodytes aedon)? Research Thesis Presented in partial fulfillment of the requirements for graduation with Research Distinction in the Undergraduate
More informationTREE SWALLOWS (TACHYCINETA BICOLOR)
The Auk 111(4):814-824, 1994 NEST ARCHITECTURE AND REPRODUCTIVE PERFORMANCE IN TREE SWALLOWS (TACHYCINETA BICOLOR) MICHAEL 19. LOMBARDO Museum of Zoology, Department of Biology, and Michigan Society of
More informationNest-climatic factors affect the abundance of biting flies and their effects on nestling condition
Nest-climatic factors affect the abundance of biting flies and their effects on nestling condition Josué Martínez-de la Puente *, Santiago Merino, Elisa Lobato 1, Juan Rivero-de Aguilar, Sara del Cerro,
More informationEffect of nest characteristics on thermal properties, clutch size, and reproductive performance for an open-cup nesting songbird
AVIAN BIOLOGY RESEARCH 10 (2), 2017 107 118 Effect of nest characteristics on thermal properties, clutch size, and reproductive performance for an open-cup nesting songbird Michael E. Akresh a *, Daniel
More informationSurvivorship. Demography and Populations. Avian life history patterns. Extremes of avian life history patterns
Demography and Populations Survivorship Demography is the study of fecundity and survival Four critical variables Age of first breeding Number of young fledged each year Juvenile survival Adult survival
More informationBreeding White Storks( Ciconia ciconia at Chessington World of Adventures Paul Wexler
Breeding White Storks(Ciconia ciconia) at Chessington World of Adventures Paul Wexler The White Stork belongs to the genus Ciconia of which there are seven other species incorporated predominantly throughout
More informationThe effects of environmental and individual quality on reproductive performance Amininasab, Seyed Mehdi
University of Groningen The effects of environmental and individual quality on reproductive performance Amininasab, Seyed Mehdi IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's
More informationMultiple broods from a hole in the wall: breeding Red-and-yellow Barbets Trachyphonus erythrocephalus in southeast Sudan
Scopus 29: 11 15, December 2009 Multiple broods from a hole in the wall: breeding Red-and-yellow Barbets Trachyphonus erythrocephalus in southeast Sudan Marc de Bont Summary Nesting and breeding behaviour
More informationAnimal Behaviour 77 (2009) Contents lists available at ScienceDirect. Animal Behaviour. journal homepage:
Animal Behaviour 77 (09) 569 574 Contents lists available at ScienceDirect Animal Behaviour journal homepage: www.elsevier.com/locate/yanbe Aromatic plants in nests of blue tits: positive effects on nestlings
More informationLay Delay in Four Temperate Passerines. Caitlin Brickman
Lay Delay in Four Temperate Passerines Caitlin Brickman Abstract In many species of birds, the number of days between nest completion and the onset of egg-laying can vary dramatically. This lay delay has
More informationBehavioural responses to ectoparasites: time-budget adjustments and what matters to Blue Tits Parus caeruleus infested by fleas
Ibis (2002), 144, 461 469 Blackwell Science Ltd Behavioural responses to ectoparasites: time-budget adjustments and what matters to Blue Tits Parus caeruleus infested by fleas FRÉDÉRIC TRIPET,* MARKUS
More informationTime constraint on food choice in provisioning blue tits, Parus caeruleus: the relationship between feeding rate and prey size
ANIMAL BEHAVIOUR, 2002, 63, 517 526 doi:10.1006/anbe.2002.3073, available online at http://www.idealibrary.com on Time constraint on food choice in provisioning blue tits, Parus caeruleus: the relationship
More informationThe effect of climate change on the correlation between avian life-history traits
Global Change Biology (2005) 11, 1606 1613, doi: 10.1111/j.1365-2486.2005.01038.x The effect of climate change on the correlation between avian life-history traits CHRISTIAAN BOTH 1 andmarcel E. VISSER
More informationActivity 4 Building Bird Nests
Activity 4 Building Bird Nests Created By Point Reyes Bird Observatory Education Program Building Bird Nests Activity 4 Objective: To teach students about songbird nests, the different types, placement
More informationVariation in egg mass in the Pied Flycatcher, Ficedula hypoleuca: An experimental test of the brood survival and brood reduction hypotheses
Evolutionary Ecology Research, 999, : 753 768 Variation in egg mass in the Pied Flycatcher, Ficedula hypoleuca: An experimental test of the brood survival and brood reduction hypotheses Lars Hillström*
More informationShort-term Water Potential Fluctuations and Eggs of the Red-eared Slider Turtle (Trachemys scripta elegans)
Zoology and Genetics Publications Zoology and Genetics 2001 Short-term Water Potential Fluctuations and Eggs of the Red-eared Slider Turtle (Trachemys scripta elegans) John K. Tucker Illinois Natural History
More informationEctoparasitism in marsh tits: costs and functional explanations
Behavioral Ecology Vol. 14 No. 2: 175 181 Ectoparasitism in marsh tits: costs and functional explanations Jan-Åke Nilsson Department of Animal Ecology, University of Lund, S-223 62 Lund, Sweden Among hole-nesting
More informationExperimental addition of greenery reduces flea loads in nests of a non-greenery using species, the tree swallow Tachycineta bicolor
J. Avian Biol. 38: 712, 2007 doi: 10.1111/j.2007.0908-8857.04015.x Copyright # J. Avian Biol. 2007, ISSN 0908-8857 Received 30 June 2005, accepted 25 October 2006 Experimental addition of greenery reduces
More informationBROOD REDUCTION IN THE CURVE-BILLED THRASHER By ROBERTE.RICKLEFS
Nov., 1965 505 BROOD REDUCTION IN THE CURVE-BILLED THRASHER By ROBERTE.RICKLEFS Lack ( 1954; 40-41) has pointed out that in species of birds which have asynchronous hatching, brood size may be adjusted
More informationHatching Asynchrony in European Starlings (Sturnus vulgaris)
Illinois State University ISU ReD: Research and edata Theses and Dissertations 4-6-2015 Hatching Asynchrony in European Starlings (Sturnus vulgaris) Jason Hanser Illinois State University, jthanse@ilstu.edu
More informationTHE ROLE OF DEVELOPMENT, PARENTAL BEHAVIOR, AND NESTMATE COMPETITION IN FLEDGING OF NESTLING TREE SWALLOWS
The Auk 117(4):996 1002, 2000 THE ROLE OF DEVELOPMENT, PARENTAL BEHAVIOR, AND NESTMATE COMPETITION IN FLEDGING OF NESTLING TREE SWALLOWS TRISTA MICHAUD AND MARTY LEONARD 1 Department of Biology, Dalhousie
More informationMicroclimate and Host Body Condition Influence Mite Population Size in a Bird-Ectoparasite System
University of Colorado, Boulder CU Scholar Undergraduate Honors Theses Honors Program Spring 2017 Microclimate and Host Body Condition Influence Mite Population Size in a Bird-Ectoparasite System William
More informationBLUEBIRD NEST BOX REPORT
BLUEBIRD NEST BOX REPORT - 2014 By Leo Hollein, August 29, 2014 Tree Swallows Thrive Bluebirds Struggle Weather has a major impact on wildlife including birds. However, not all nesting birds in the Refuge
More information769 q 2005 The Royal Society
272, 769 773 doi:10.1098/rspb.2004.3039 Published online 7 April 2005 Life-history variation of a neotropical thrush challenges food limitation theory Valentina Ferretti 1,2, *,, Paulo E. Llambías 1,2,
More informationNestling growth in the Great Tit Parus major and the Willow Tit P. montanus
Nestling growth in the Great Tit Parus major and the Willow Tit P montanus Markku Orell Orell, M 1983 : Nestling growth in the Great Tit Parus major and the Willow Tit P montanus - Ornis Fennica 60:65-82
More informationBluebirds & Des Moines City Parks
Bluebirds & Des Moines City Parks Environmental Education Eastern Bluebird What is a Bluebird? The Eastern Bluebird is smaller than the more commonly seen robin but they are both in the thrush family and
More informationBarn Swallow Nest Monitoring Methods
Introduction These methods have been developed to guide volunteers in collecting data on the activities and productivity of Barn Swallow nest sites. Effort has been made to standardize these methods for
More informationCU Scholar. University of Colorado, Boulder. Kelley Mccahill Spring 2017
University of Colorado, Boulder CU Scholar Undergraduate Honors Theses Honors Program Spring 2017 DO PARENTS ADJUST INCUBATION BEHAVIOR AS A FUNCTION OF NEST ECTOPARASITES? AN EXPERIMENTAL ANALYSIS OF
More informationSEXUAL SELECTION ON PLUMAGE COLOR IN A NORTH CAROLINA POPULATION OF EASTERN BLUEBIRDS. Callie Lynn Younginer. Honors Thesis
SEXUAL SELECTION ON PLUMAGE COLOR IN A NORTH CAROLINA POPULATION OF EASTERN BLUEBIRDS by Callie Lynn Younginer Honors Thesis Appalachian State University Submitted to the Department of Biology in partial
More informationFitness cost of incubation in great tits (Parus major) is related to clutch size de Heij, Maaike E.; van den Hout, Piet J.
University of Groningen Fitness cost of incubation in great tits (Parus major) is related to clutch size de Heij, Maaike E.; van den Hout, Piet J.; Tinbergen, Joost Published in: Proceedings of the Royal
More informationMale parental care and monogamy in snow buntings
Behav Ecol Sociobiol (1987) 20:377-382 Behavioral Ecology and Sociobiology 9 Springer-Verlag 1987 Male parental care and monogamy in snow buntings Bruce E. Lyon*, Robert D. Montgomerie, and Linda D. Hamilton*
More informationSUN CITY BIRD CLUB BLUEBIRD NEST_BOX MONITOR S GUIDE. Page 1
SUN CITY BIRD CLUB BLUEBIRD NEST_BOX MONITOR S GUIDE Page 1 THE BIG PICTURE Certain birds nest only in cavities. (Including Bluebirds, Chickadees, Tufted Titmice, Brown-Headed Nuthatches) But they can
More informationBrood size and body condition in the House Sparrow Passer domesticus: the influence of brooding behaviour
Ibis (2002), 144, 284 292 Blackwell Science Ltd Brood size and body condition in the House Sparrow Passer domesticus: the influence of brooding behaviour OLIVIER CHASTEL 1 * & MARCEL KERSTEN 1,2 1 Centre
More informationRed Crowned Parakeet (Cyanoramphus novaezelandiae) health, disease and nesting study on Tiritiri Matangi 2014/2015. Emma Wells on behalf of
Red Crowned Parakeet (Cyanoramphus novaezelandiae) health, disease and nesting study on Tiritiri Matangi 2014/2015 John Sibley Emma Wells on behalf of Auckland Zoo, Supporters of Tiritiri Matangi, Massey
More informationIncubation feeding in snow buntings: female manipulation or indirect male parental care?
Behav Ecol Sociobiol (185) 17:27-284 Behavioral Ecology and Sociobiology Springer-Verlag 185 Incubation feeding in snow buntings: female manipulation or indirect male parental care? Bruce E. Lyon and Robert
More informationEastern Bluebird Early Egg Viability Outcomes- A Mini- Study. By Penny Brandau and Paula Ziebarth
Eastern Bluebird Early Egg Viability Outcomes- A Mini- Study By Penny Brandau and Paula Ziebarth Ask Madame WingNut for this issue of the OBS newsletter is coauthored by two Madame WingNuts: Penny Brandau
More informationAVIAN HAVEN Wild Bird Rehabilitation Center
AVIAN HAVEN Wild Bird Rehabilitation Center Featured Cases Second Quarter 2010 1 In this Issue Starts on Slide Woodcocks............... 4 House Finches.............. 12 Osprey................. 23 Northern
More informationCAVE SWALLOW (Petrochelidon fulvus) NEST REUSE IN EAST-CENTRAL TEXAS. A Thesis MARGARET ELIZABETH BYERLY
CAVE SWALLOW (Petrochelidon fulvus) NEST REUSE IN EAST-CENTRAL TEXAS A Thesis by MARGARET ELIZABETH BYERLY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of
More informationShort Report Key-site monitoring on Hornøya in Rob Barrett & Kjell Einar Erikstad
Short Report 2-2010 Key-site monitoring on Hornøya in 2009 Rob Barrett & Kjell Einar Erikstad SEAPOP 2010 Key-site monitoring on Hornøya in 2009 The 2009 breeding season was in general good for most species
More informationEgg size, offspring sex and hatching asynchrony in zebra finches Taeniopygia guttata
JOURNAL OF AVIAN BIOLOGY 36: 12/17, 2005 Egg size, offspring sex and hatching asynchrony in zebra finches Taeniopygia guttata Joanna Rutkowska and Mariusz Cichoń Rutkowska, J. and Cichoń, M. 2005. Egg
More informationBreeding biology of the alpine swift Apus melba in Sofia, Bulgaria
1-036.qxd 29.07.2002 10:06 Seite 1 Avian Science Vol. 2 No. : (2002) ISSN 1424-8743 1 Breeding biology of the alpine swift Apus melba in Sofia, Bulgaria Anton Antonov and Dimitrinka Atanasova Laying date,
More informationand hatching success in starlings
Functional Ecology 2000 The consequences of clutch size for incubation conditions M. G. Barker Aberdeen, UK Blackwell Science, Ltd and hatching success in starlings J. M. REID, P. MONAGHAN and G. D. RUXTON
More informationIntroduction BEHAVIOURAL ECOLOGY. Russell D. Dawson Æ Cheyenne C. Lawrie Erin L. O Brien
Oecologia (2005) 144: 499 507 DOI 10.1007/s00442-005-0075-7 BEHAVIOURAL ECOLOGY Russell D. Dawson Æ Cheyenne C. Lawrie Erin L. O Brien The importance of microclimate variation in determining size, growth
More informationImmunocompetence and Parasitism in Nestlings from Wild Populations
The Open Ornithology Journal, 2010, 3, 27-32 27 Open Access Immunocompetence and Parasitism in Nestlings from Wild Populations Santiago Merino* Departamento de Ecología Evolutiva, Museo Nacional de Ciencias
More informationBLACK OYSTERCATCHER NEST MONITORING PROTOCOL
BLACK OYSTERCATCHER NEST MONITORING PROTOCOL In addition to the mid-late May population survey (see Black Oystercatcher abundance survey protocol) we will attempt to continue monitoring at least 25 nests
More informationEgyptian vulture (Neophron percnopterus) research & monitoring Breeding Season Report- Beypazarı, Turkey
Egyptian vulture (Neophron percnopterus) research & monitoring - 2011 Breeding Season Report- Beypazarı, Turkey October 2011 1 Cover photograph: Egyptian vulture landing in Beypazarı dump site, photographed
More informationThe effect of testosterone injections on aggression and begging behaviour of black headed gull chicks (Larus ridibundus)
The effect of testosterone injections on aggression and begging behaviour of black headed gull chicks (Larus ridibundus) Abstract L.M. van Zomeren april 2009 supervised by Giuseppe Boncoraglio and Ton
More informationM A\\ Trail Guide. Audubon Chapter of Minneapolis
M A\\ Audubon Chapter of Minneapolis Trail Guide Our Eastern Bluebird is experiencing a changing world. We, the people, are partly responsible for this regrettable situation. The habitat this small secondary
More informationDENSITY-DEPENDENT PROCESSES IN THE POPULATION DYNAMICS OF A BIRD ECTOPARASITE CERATOPHYLLUS GALLINAE
Ecology, 80(4), 1999, pp. 1267 1277 1999 by the Ecological Society of America DENSITY-DEPENDENT PROCESSES IN THE POPULATION DYNAMICS OF A BIRD ECTOPARASITE CERATOPHYLLUS GALLINAE FRÉDÉRIC TRIPET 1 AND
More informationGrowth and Development. Embryonic development 2/22/2018. Timing of hatching. Hatching. Young birds and their parents
Growth and Development Young birds and their parents Embryonic development From fertilization to hatching, the embryo undergoes sequence of 42 distinct developmental stages The first 33 stages vary little
More informationHOW MANY BASKETS? CLUTCH SIZES THAT MAXIMIZE ANNUAL FECUNDITY OF MULTIPLE-BROODED BIRDS
The Auk 118(4):973 98, 001 HOW MANY BASKETS? CLUTCH SIZES THAT MAXIMIZE ANNUAL FECUNDITY OF MULTIPLE-BROODED BIRDS GEORGE L. FARNSWORTH 1 AND THEODORE R. SIMONS Cooperative Fish and Wildlife Research Unit,
More informationA future cost of misdirected parental care for brood parasitic young?
Folia Zool. 55(4): 367 374 (2006) A future cost of misdirected parental care for brood parasitic young? Mark E. HAUBER School of Biological Sciences, University of Auckland, Auckland, PB 92019, New Zealand;
More informationLong-term changes and breeding success in relation to nesting structures used by the white stork, Ciconia ciconia
Ann. Zool. Fennici 46: 34 38 ISSN 0003-455X (print), ISSN 1797-2450 (online) Helsinki 27 February 2009 Finnish Zoological and Botanical Publishing Board 2009 Long-term changes and breeding success in relation
More informationBirds Birds are vertebrates (animals with backbones) with wings and feathers. Most birds can fly, using powerful muscles to flap their wings.
Birds Birds are vertebrates (animals with backbones) with wings and feathers. Most birds can fly, using powerful muscles to flap their wings. But a few bird speces do not have strong enough wings to fly,
More informationEgg laying in the Blue Tit (Parus caeruleus):
Chapter 2 Egg laying in the Blue Tit (Parus caeruleus): effect of temperature and interaction with food resource Fabrizio Grieco 24 Chapter 2 ABSTRACT Egg size and laying interruptions in a Blue Tit population
More informationNiche separation and Hybridization -are nestling hybrid flycatchers provided with a broader diet?
Niche separation and Hybridization -are nestling hybrid flycatchers provided with a broader diet? Nilla Fogelberg Degree project in biology, 2006 Examensarbete i biologi 20p, 2006 Biology Education Centre
More informationShort Report Key-site monitoring on Hornøya in Rob Barrett & Kjell Einar Erikstad
Short Report 3-2011 Key-site monitoring on Hornøya in 2010 Rob Barrett & Kjell Einar Erikstad SEAPOP 2011 Key-site monitoring on Hornøya in 2010 Apart from the weather which was unusually wet, the 2010
More informationHe was a year older than her and experienced in how to bring up a brood and survive.
Great Tit 1. Life of a great tit 1.1. Courtship A young female great tit met her mate in a local flock in April. The male established a breeding territory and would sing, sway his head and display his
More informationDensity and age of breeding pairs influence feral pigeon, Columba livia reproduction
Folia Zool. 56(1): 71 83 (2007) Density and age of breeding pairs influence feral pigeon, Columba livia reproduction Tomasz HETMAŃSKI 1 * and Miłosława BARKOWSKA 2 1 Department of Zoology, Pomeranian University,
More informationIS REPRODUCTION BY TREE SWALLOWS COST FREE?
The Auk 117(4):902 912, 2000 IS REPRODUCTION BY TREE SWALLOWS COST FREE? MICHAEL T. MURPHY, 1 BRIAN ARMBRECTH, 2 EKATERINI VLAMIS, 3 AND AARON PIERCE 4 Department of Biology, Hartwick College, Oneonta,
More informationEffect of Feathers as Nest Insulation on Incubation Behavior and Reproductive Performance of Tree Swallows (Tachycineta bicolor)
Grand Valley State University ScholarWorks@GVSU Peer Reviewed Publications Biology Department 1995 Effect of Feathers as Nest Insulation on Incubation Behavior and Reproductive Performance of Tree Swallows
More informationSeven Nests of Rufescent Tiger-Heron (Tigrisoma lineatum)
Seven Nests of Rufescent Tiger-Heron (Tigrisoma lineatum) Steven Furino and Mario Garcia Quesada Little is known about the nesting or breeding behaviour of Rufescent Tiger-Heron (Tigrisoma lineatum). Observations
More informationHatching asynchrony and brood reduction influence immune response in Common Kestrel Falco tinnunculus nestlings
Ibis (2011), 153, 601 610 Hatching asynchrony and brood reduction influence immune response in Common Kestrel Falco tinnunculus nestlings JESÚS MARTÍNEZ-PADILLA 1,2 * & JAVIER VIÑUELA 3 1 Department of
More informationBREEDING ECOLOGY OF THE LITTLE TERN, STERNA ALBIFRONS PALLAS, 1764 IN SINGAPORE
NATURE IN SINGAPORE 2008 1: 69 73 Date of Publication: 10 September 2008 National University of Singapore BREEDING ECOLOGY OF THE LITTLE TERN, STERNA ALBIFRONS PALLAS, 1764 IN SINGAPORE J. W. K. Cheah*
More informationPROBABLE NON-BREEDERS AMONG FEMALE BLUE GROUSE
Condor, 81:78-82 0 The Cooper Ornithological Society 1979 PROBABLE NON-BREEDERS AMONG FEMALE BLUE GROUSE SUSAN J. HANNON AND FRED C. ZWICKEL Parallel studies on increasing (Zwickel 1972) and decreasing
More informationUniversity of Groningen. Offspring fitness and individual optimization of clutch size Both, C; Tinbergen, Joost; Noordwijk, Arie J.
University of Groningen Offspring fitness and individual optimization of clutch size Both, C; Tinbergen, Joost; Noordwijk, Arie J. van Published in: Proceedings of the Royal Society of London. Series B,
More informationRE-INTRODUCTION OF THE ORIENTAL PIED HORNBILL IN SINGAPORE, WITH EMPHASIS ON ARTIFICIAL NESTS
THE RAFFLES BULLETIN OF ZOOLOGY 2011 THE RAFFLES BULLETIN OF ZOOLOGY 2011 Supplement No. 24: 5 10 Date of Publication: 30 Mar.2011 National University of Singapore RE-INTRODUCTION OF THE ORIENTAL PIED
More informationNest quality in relation to adult bird condition and its impact on reproduction in Great Tits Parus major
ACTA ORNITHOLOGICA Vol. 43 (2008) No. 1 Nest quality in relation to adult bird condition and its impact on reproduction in Great Tits Parus major Elena ÁLVAREZ & Emilio BARBA Cavanilles Institute of Biodiversity
More informationReduced availability of refuse and breeding output in a herring gull (Larus argentatus) colony
Ann. Zool. Fennici 35: 37 42 ISSN 0003-455X Helsinki 4 June 1998 Finnish Zoological and Botanical Publishing Board 1998 Reduced availability of refuse and breeding output in a herring gull (Larus argentatus)
More informationLow Cross-Sex Genetic Correlation in Carotenoid-Based Plumage Traits in the Blue Tit Nestlings (Cyanistes caeruleus)
Low Cross-Sex Genetic Correlation in Carotenoid-Based Plumage Traits in the Blue Tit Nestlings (Cyanistes caeruleus) Szymon M. Drobniak 1 *, Dariusz Wiejaczka 1, Aneta Arct 1, Anna Dubiec 2, Lars Gustafsson
More informationBald Eagles in the Yukon. Wildlife in our backyard
Bald Eagles in the Yukon Wildlife in our backyard The Bald Eagle at a glance Both male and female adult Bald Eagles have a dark brown body and wings with a white head, neck and tail. They have a yellow
More informationEvidence for the signaling function of egg color in the pied flycatcher Ficedula hypoleuca
Behavioral Ecology doi:10.1093/beheco/ari072 Advance Access publication 6 July 2005 Evidence for the signaling function of egg color in the pied flycatcher Ficedula hypoleuca Juan Moreno, Judith Morales,
More informationì<(sk$m)=bdheec< +^-Ä-U-Ä-U
Genre Comprehension Skill Text Features Science Content Nonfiction Put Things in Order Captions Labels Glossary Life Cycles Scott Foresman Science 1.4 ì
More informationGreat tits lay increasingly smaller clutches than selected for: a study of climate- and density-related changes in reproductive traits
Journal of Animal Ecology 2009, 78, 1298 1306 doi: 10.1111/j.1365-2656.2009.01596.x Great tits lay increasingly smaller clutches than selected for: a study of climate- and density-related changes in reproductive
More informationNesting Anna s Hummingbird Observations. At Oaks Bottom Wildlife Refuge February 2012 to June Beverly LaBelle
Nesting Anna s Hummingbird Observations At Oaks Bottom Wildlife Refuge February 2012 to June 2012 Beverly LaBelle Summary Nests located: 15. From February to mid April Re-nesters located: 5. From mid April
More informationThis is an unspecified version of the following published document: EPrint URI:
This is an unspecified version of the following published document: Goodenough, Anne E and Hart, Adam G (2012) Bird nests: An overlooked ecosystem opportunity for specialised nest-dwelling arthropods.
More informationPREDATION ON RED-WINGED BLACKBIRD EGGS AND NESTLINGS
Wilson Bull., 91( 3), 1979, pp. 426-433 PREDATION ON RED-WINGED BLACKBIRD EGGS AND NESTLINGS FRANK S. SHIPLEY The contents of Red-winged Blackbird (Age&us phoeniceus) nests are subject to extensive and
More informationWilson Bull., 103(4), 199 1, pp
SHORT COMMUNICATIONS 693 Wilson Bull., 103(4), 199 1, pp. 693-697 Conspecific aggression in a Wood Stork colony in Georgia.-The probability of interactions among conspecifics, including aggression, is
More informationREPRODUCTIVE SUCCESS OF AMERICAN KESTRELS: THE ROLE OF PREY ABUNDANCE AND WEATHER
The Condor 102:814-822 0 The Cooper Omahological Society 2000 RERODUCTIVE SUCCESS OF AMERICAN KESTRELS: THE ROLE OF REY ABUNDANCE AND WEATHER RUSSELL D. DAWSON~ AND GARY R. BORTOLOTTI Department of Biology,
More informationShort-term regulation of food-provisioning
Chapter 5 Short-term regulation of food-provisioning rate and effect on prey size in Blue Tits (Parus caeruleus) Fabrizio Grieco Animal Behaviour, in press 84 Chapter 5 ABSTRACT The short-term regulation
More informationWOOD STORKS (MYCTERIA AMERICANA) IN EAST-CENTRAL GEORGIA
The Auk 112(1):237-243, 1995 FACTORS AFFECTING REPRODUCTIVE SUCCESS OF WOOD STORKS (MYCTERIA AMERICANA) IN EAST-CENTRAL GEORGIA MALCOLM C. COULTER AND A. LAWRENCE BRYAN, JR. Savannah River Ecology Laboratory,
More informationLAYING DATES AND CLUTCH SIZE IN THE GREAT TIT
Wilson Bull., 101(2), 1989, pp. 236-253 LAYING DATES AND CLUTCH SIZE IN THE GREAT TIT C. M. PERRINS AND R. H. MCCLEERY ABSTRACT. - During the course of 40 years of observations, we found that the mean
More informationPerformance of Sudanese native Dwarf and Bare Neck Chicken raised under improved traditional production system
AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA ISSN Print: 2151-7517, ISSN Online: 2151-7525, doi:10.5251/abjna.2011.2.5.860.866 2011, ScienceHuβ, http://www.scihub.org/abjna Performance of Sudanese
More information2009 Eagle Nest News from Duke Farms eagle nest Written by Larissa Smith, Assistant Biologist
2009 Eagle Nest News from Duke Farms eagle nest Written by Larissa Smith, Assistant Biologist July 7 - The youngest chick was gone from the nest this morning but has returned to the nest several times
More informationDoes begging affect growth in nestling tree swallows, Tachycineta bicolor?
Behav Ecol Sociobiol (2003) 54:573 577 DOI 10.1007/s00265-003-0668-2 ORIGINAL ARTICLE Marty L. Leonard Andrew G. Horn Jackie Porter Does begging affect growth in nestling tree swallows, Tachycineta bicolor?
More informationBird Species Fact Sheets
MODULE 1: LEARNING ABOUT BIRDS Bird Species Fact Sheets The following fact sheets cover 4 different birds, Blue tit, Chaffinch, Sand martin and House martin. These 4 species are featured because they can
More informationEIDER JOURNEY It s Summer Time for Eiders On the Breeding Ground
The only location where Steller s eiders are still known to regularly nest in North America is in the vicinity of Barrow, Alaska (Figure 1). Figure 1. Current and historic Steller s eider nesting habitat.
More informationNest size in monogamous passerines has recently been hypothesized
Behavioral Ecology Vol. 12 No. 3: 301 307 Nest size affects clutch size and the start of incubation in magpies: an experimental study Juan José Soler, a Liesbeth de Neve, b Juan Gabriel Martínez, b and
More informationBLACK HARRIER RESEARCH
Louis Groenewald BLACK HARRIER RESEARCH Newsletter #1: April 2017 Welcome to our 1 st newsletter in which we bring you the latest in Black Harrier conservation. 2016 was a very interesting year - with
More information