First Documented Records of White Plumage Aberration in the White-necked Thrush (Turdus albicollis)
|
|
- Nigel Norman
- 6 years ago
- Views:
Transcription
1 First Documented Records of White Plumage Aberration in the White-necked Thrush (Turdus albicollis) Author(s): Jimi Martins-Silva, Maurício B. Vecchi, and Maria Alice S. Alves Source: The Wilson Journal of Ornithology, 128(4): Published By: The Wilson Ornithological Society DOI: URL: BioOne ( is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne s Terms of Use, available at terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.
2 SHORT COMMUNICATIONS 931 The Wilson Journal of Ornithology 128(4): , 2016 First Documented Records of White Plumage Aberration in the White-necked Thrush (Turdus albicollis) Jimi Martins-Silva, 1,2 Maurício B. Vecchi, 2 and Maria Alice S. Alves 2,3 ABSTRACT. Aberrations of plumage coloration are caused by hereditary and environmental factors and are not rare in wild birds, but few studies have estimated their frequency in natural populations. Here, we provide the first report of a white plumage aberration in an insular population of the White-necked Thrush (Turdus albicollis) on Ilha Grande, in southern Rio de Janeiro state, Brazil. Four (two males and two females) of the 123 individuals examined in presented unusual white feathers on some part of the body (especially the hindneck), which may represent progressive graying or the result of injury. The frequency of the white plumage aberration recorded in our study (3.25%) is approximately three times higher than that expected in natural bird populations, and three of the four aberrant individuals were captured in the most disturbed forest site sampled. Further studies will be necessary to identify the true causes of the high frequency of white plumage aberrations detected in the study population, which may include diet, longevity, behavior, parasitism or other environmental factors. Received 5 August Accepted 14 February Key words: Atlantic forest, body injury, island, progressive graying, Turdidae, white feathers, wild populations. In birds, plumage coloration results from the combination of different pigments, of which the most common is melanin (van Grouw 2006). Most bird species present two types of melanin at different concentrations: eumelanin, responsible for the blackish appearance of feathers, skin and eyes, and pheomelanin, associated with the reddishbrown coloration of the feathers (van Grouw 2006). Plumage color aberrations are not rare in wild birds (Michener and Michener 1936, Sage 1963, Hosner 1 Programa de Pós-Graduação em Ecologia e Evolução, Universidade do Estado do Rio de Janeiro, Pavilhão Haroldo Lisboa da Cunha, Sala 224, Rua São Francisco Xavier, 524, Maracanã, , Rio de Janeiro-RJ, Brazil. 2 Departamento de Ecologia, Universidade do Estado do Rio de Janeiro, Pavilhão Haroldo Lisboa da Cunha, Sala 220, Rua São Francisco Xavier, 524, Maracanã, , Rio de Janeiro-RJ, Brazil. 3 Corresponding author; masaalves19@gmail.com and Lebbin 2006) and can be caused by several factors (Summers and Kostecke 2004), such as diet, parasites, disease, injury, mutation, and age (Guay et al. 2012). A deficiency or excess of specific components of the diet can cause plumage aberrations (Guay et al. 2012), such as a deficiency of lysine, for example, which can cause whitish plumage (Fritz et al. 1946). Under both natural and experimental conditions, endo- and ectoparasites have been observed to affect the deposition of pigments in growing feathers (Thompson et al. 1997, Brawner et al. 2000). Injuries may also induce the appearance of aberrant plumage in the area surrounding the affected body region, although the mechanism of this response has not yet been identified (Phillips 1954). Aberrations that cause white feathers can be classified as albinism, schizochroism, leucism, and progressive graying (van Grouw 2006, 2012b, 2013; Cieslak et al. 2011), although chromatic aberrations have been misidentified frequently in the literature. For example, Ferrer-Sánchez and Rodríguez-Estrella (2014) misidentified a Turkey Vulture (Cathartes aura) as a partial albino, which is not a valid category of chromatic aberration (van Grouw 2006). In this individual, 70% of the remiges of the left wing were white, and probably represented progressive graying or the consequences of a local injury. Albinism is the total loss of both types of melanin in the whole body. The plumage of albino birds is completely white, the eyes are pink, and the skin is pale, but carotenoid is retained in the feathers (van Grouw 2006). This aberration generates visual problems and low activity rates (Lee and Keeler 1951), which may account for the rarity of wild adult birds with this plumage abnormality (van Grouw 2012b, 2013). Schizochroism is the total loss of one type of melanin (van Grouw 2006). In this case, the melanin of bird eyes has a distinct embryonic origin (cells in the outer layer of the optic cup) from that of the rest of the body (neural crests in the body). As most color mutations affect only the melanin originated from the neural crests,
3 932 THE WILSON JOURNAL OF ORNITHOLOGY Vol. 128, No. 4, December 2016 the color of bird eyes is not affected by schizochroism (van Grouw 2012a). Leucism is the complete absence of both types of melanin in part or all of the plumage and skin (van Grouw 2012b). Leucistic birds may have variable proportions of white feathers, but usually have pigmented eyes. In extreme (100%) cases of leucism, the individual also lacks melanin in its skin, beak, and bare horny parts (van Grouw 2006, 2012b, 2013). Progressive graying is an age-dependent process involving the gradual loss of pigment cells over time, which leads to the progressive loss of the coloration of the feathers (van Grouw 2013). This aberration has been frequently misidentified as leucism (van Grouw 2012a). White color aberrations (originally termed leucism ) are generally found in,1% of the individuals in bird populations in natural areas (Sage 1962, Bensch et al. 2000), and 1 2% in urban areas (Il enko 1960 apud Møller and Mousseau (2001). Here, we provide the first documented records of white plumage aberrations in the White-necked Thrush Turdus albicollis (Vieillot, 1818), a Neotropical forest species distributed throughout Central and South America between Mexico and Uruguay. The species is common in most of the Amazonian and Atlantic forests of Brazil (Collar 2005). METHODS Our samples were collected in 11 field trips conducted between June 2013 and May 2015, during a long term mist-netting/banding study of wild birds (permits: CEMAVE/ICMBio no. 1237, INEA no. 051/2011, SISBIO ) in the Ilha Grande State Park (approximate coordinates S, W; datum WGS 84). This park covers ~60% of Ilha Grande, a 19,300-ha oceanic island in the municipality of Angra dos Reis, between 2.3 km (min) and 22 km (max) off the mainland in southern Rio de Janeiro state, Brazil. Birds were collected in mist-nets set at 11 sites in the Atlantic rainforest, mostly old secondary growth. The mist-netted White-necked Thrushes were all banded and examined visually for changes in the color pattern of the plumage, tarsi, beak and eyes, and subsequently released at the capture site after ~30 mins. As this species is not sexually dimorphic in plumage, samples of ll of blood were collected from individuals with aberration plumage via the tarsal or brachial veins using non-heparinized microcapillary tubes (50 ll) for molecular sexing. The blood samples were stored in plastic 1.5ml Eppendorf tubes with absolute ethanol. Sex molecular identification was conducted using the CHD gene technique, using the P2 and P8 primers developed by Griffiths et al. (1998), following Ritter et al. (2003). RESULTS We captured and examined 123 White-necked Thrushes (all adults), of which, four presented abnormal white feathers on some part of the body, especially the hindneck. Three aberrant individuals were captured at the edge of a disturbed forest near a village (Vila Dois Rios). This site was sampled during 3 days of fieldwork, when 34 thrushes were captured. The first thrush was captured on 22 July 2014, and was a female with white spots on the secondary remiges of the left wing and the hindneck (Fig. 1a). At the same site, we captured two aberrant individuals on the 4th (male) and 5th (female) of March 2015 (Figs. 1b c). A male with a white feather in the hindneck (Fig. 1d) was captured within a primary forest 4 km north of Vila Dois Rios on 19 August DISCUSSION The four aberrant White-necked Thrushes sampled on Ilha Grande all had abnormal white feathers but normally-colored eyes, beak, tarsus, and skin to indicate the effects of progressive graying or injury. In the New World, white color aberrations have been reported previously in at least four Turdus species from North America (Johnston 1947; Dexter 1949, 1957; Gross 1965) and South America (Henry 2005, Rodríguez- Pinnilla and Gómez-Martínez 2011), including the Rufous-bellied Thrush (Turdus rufiventris) in Brazil (Gonçalves et al. 2008). In some of these reports, the term albinism was used erroneously, given that the birds presented beak, tarsus, and eyes of normal color. To date, the only known report of a color aberration in the White-necked Thrush is Helmut Sick s (Sick 2001:700) reference to a female with a cinnamon mutation, which appears to be consistent with the brown
4 SHORT COMMUNICATIONS 933 FIG. 1. The four Adult White-necked Thrushes with white plumage aberrations captured between June 2014 and March 2015 on Ilha Grande, Rio de Janeiro, Brazil. Photos by J. Martins-Silva. aberration defined by van Grouw (2006), a sexlinked recessive mutation, which is among the most widespread mutations in birds (van Grouw 2013). Our records from Ilha Grande thus represent the first documented case of a white plumage aberration in a population of White-necked Thrushes, in which a frequency of 3.25% was recorded, a rate more than three times the highest value recorded typically (1%) in natural bird populations (Sage 1962, Bensch et al. 2000). Three of the four aberrant individuals were captured in the most disturbed forest sampled, adjacent to a small 10-ha village (Vila Dois Rios). White-necked Thrushes are rarely observed in open areas (Collar 2005), and Turdus albicollis is the most forest-dwelling of the five Turdus species found on Ilha Grande (Alves and Vecchi 2009). In this case, the forest surrounding Vila Dois Rios may be subject to anthropogenic effects similar to those of urban areas, which might result in a higher frequency of white color aberrations in the local birds (Il Enko 1960 apud Møller and Mousseau (2001). If we consider only the White-necked Thrushes captured in the vicinity of Vila Dois Rios (n ¼ 34, three field trips), the frequency of the aberration would reach 8.82% of the sample population, a relatively extreme value. Color plumage aberrations are usually associated with a number of different genetic mutations (van Grouw 2006). As albinism and leucism are not caused by sex-linked genes, no sexual difference would be expected. However, progressive graying may be sex-biased in some species. In the House Sparrow (Passer domesticus), for example, this
5 934 THE WILSON JOURNAL OF ORNITHOLOGY Vol. 128, No. 4, December 2016 condition appears to be more common in females than in males (van Grouw 2012b). In a previous mist-netting study of Whitenecked Thrushes on Ilha Grande, Ritter et al. (2003) recorded a male-biased sex ratio (2.4:1; n ¼ 74). The proportion of females with the white plumage aberration recorded in the present study (1:1) was thus much higher than expected for the population at Ilha Grande, based on mist-netting data. Somatic mutations associated with increasing age may also lead to plumage color aberrations (Hanson 1949, Warner 1963), although in this case, the unpigmented feathers are typically distributed randomly on the head, back, and flanks (van Grouw 2013). Although the individuals captured in our study were all clearly adult, we could not estimate their exact age and, it was thus impossible to associate the occurrence of aberrant plumage with age. As we detected white feathers on the heads of all the aberrant individuals captured, and one of them had white feathers asymmetrically distributed on one of the wings, it is possible that the observed condition was progressive graying, a fairly common aberration in birds (van Grouw 2012b), even though it has not yet been reported in Whitenecked Thrushes. It is possible that our findings on color aberrations in White-necked Thrushes reflect injuries to the birds, given that the white feathers were invariably concentrated at the back of the head and neck; however, there are no clues to the possible causes of any such injuries. More detailed studies of the diet, longevity, behavior, and parasitism of the population of Turdus albicollis from Ilha Grande will be required before the underlying causes of the high frequency of individuals with white plumage aberrations can be identified more conclusively. ACKNOWLEDGMENTS We thank the Brazilian National Science Council (Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPq) for a scholarship (proc / ) and the Carlos Chagas Filho Rio de Janeiro State Research Foundation (Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro - FAPERJ) for a grant (proc. E-26/ /2012) to MASA. Denise M. Nogueira, Flávia G. Chaves, and Keila F. Henud helped with the molecular sex identification. The Rio de Janeiro State Environment Institute (INEA) and the UERJ Center for Environmental Studies and Sustainable Development (Centro de Estudos Ambientais e Desenvolvimento Sustentável CEADS/UERJ) provided logistic support. The Brazilian National Center for Research and Conservation of Wild Birds (Centro Nacional de Pesquisa e Conservação de Aves Silvestres - CEMAVE) at the Chico Mendes Biodiversity Conservation Institute (Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio) donated the aluminum bands. Lulu Stader and Stephen Ferrari reviewed the English. H. van Grouw and an anonymous referee provided valuable comments to improve this paper. LITERATURE CITED ALVES, M. A. S. AND M. B. VECCHI Birds, Ilha Grande, state of Rio de Janeiro, southeastern Brazil. Check List 5: BENSCH, S., B. HANSSON, D. HASSELQUIST, AND B. NIELSEN Partial albinism in a semi-isolated population of Great Reed Warblers. Hereditas 133: BRAWNER III, W. R., G. E. HILL, AND C. A. SUNDERMANN Effects of coccidial and mycoplasmal infections on carotenoid-based plumage pigmentation in male House Finches. Auk 117: CIESLAK, M., M. REISSMANN, M. HOFREITER, AND A. LUDWIG Colours of domestication. Biological Reviews 86: COLLAR, N. J Family Turdidae (thrushes). Pages in Handbook of the birds of the world. Volume 10. Cuckoo-shrikes to thrushes (J. del Hoyo, A. Elliott, and D. A. Christie, Editors). Lynx Edicions, Barcelona, Spain. DEXTER, R. W A banded albino robin. Bird-Banding 20:187. DEXTER, R. W Observations on three albino American Robins. Wilson Bulletin 69: FERRER-SÁNCHEZ, Y. AND R. RODRÍGUEZ-ESTRELLA Partial albino Turkey Vultures (Cathartes aura) in the island of Cuba. Ornitología Neotropical 25: FRITZ, J. C., J. H. HOOPER, J.L.HALPIN, AND H. P. MOORE Failure of feather pigmentation in bronze poults due to lysine deficiency. Journal of Nutrition 31: GONÇALVES JR., C. C., E. A. DA SILVA, A. C. DE LUCA, T. PONGILUPPI, AND F. DE B. MOLINA Record of a leucistic Rufous-bellied Thrush Turdus rufiventris (Passeriformes, Turdidae) in São Paulo city, southeastern Brazil. Revista Brasileira de Ornitologia 16: GRIFFITHS, R., M. C. DOUBLE, K.ORR, AND R. J. G. DAWSON A DNA test to sex most birds. Molecular Ecology 7:1,071 1,075. GROSS, A. O The incidence of albinism in North American birds. Bird-Banding 36: GUAY, P.-J., D. A. POTVIN, AND R. W. ROBINSON Aberrations in plumage coloration in birds. Australian Field Ornithology 29: HANSON, H. C Notes on white spotting and other plumage variations in geese. Auk 66: HENRY, P.-Y New distributional records of birds from Andean and western Ecuador. Cotinga 23: HOSNER, P. A. AND D. J. LEBBIN Observations of plumage pigment aberrations of birds in Ecuador,
6 SHORT COMMUNICATIONS 935 including Ramphastidae. Boletín de la Sociedad Antioqueña de Ornitología 16: JOHNSTON, V. R Albino robins and red-wing at Stockton, California. Auk 64: LEE,F.AND C. E. KEELER Pigment variations and their correlates in birds. Auk 68: MICHENER, H. AND J. R. MICHENER Abnormalities in birds. Condor 38: MØLLER, A. P. AND T. A. MOUSSEAU Albinism and phenotype of barn swallows (Hirundo rustica) from Chernobyl. Evolution 55: PHILLIPS, A. R The cause of partial albinism in a Great-tailed Grackle. Wilson Bulletin 66:66. RITTER, P., C. Y. MIYAKI, A. P. DE LEON, AND M. A. S. ALVES Sex determination using CHD-1 gene and sexual dimorphism in the White-necked Thrush (Turdus albicollis) in the Atlantic forest at Ilha Grande, Rio de Janeiro, southeastern Brazil. Ornitología Neotropical 14: RODRÍGUEZ-PINILLA, Q. AND M. J. GÓMEZ-MARTÍNEZ Incomplete leucism in Turdus fuscater (Passeriformes: Turdidae) in the Colombian Andes. Boletín Científico del Museo de Historia Natural 15: SAGE, B. L Albinism and melanism in birds. British Birds 55: SAGE, B. L The incidence of albinism and melanism in British birds. British Birds 56: SICK, H Ornitologia brasileira. Editora Nova Fronteira, Rio de Janeiro, Brazil. SUMMERS, S. G. AND R. M. KOSTECKE Female Brownheaded Cowbird with partial male plumage. Wilson Bulletin 116: THOMPSON, C. W., N. HILLGARTH, M. LEU, AND H. E. MCCLURE High parasite load in House Finches (Carpodacus mexicanus) is correlated with reduced expression of a sexually selected trait. American Naturalist 149: VAN GROUW, H Not every white bird is an albino: sense and nonsense about colour aberrations in birds. Dutch Birding 28: VAN GROUW, H. 2012a. Plumage aberrations in Australian birds: a comment on Guay et al. (2012) and Frith & Murphy (2012). Australian Field Ornithology 29: VAN GROUW, H. 2012b. What colour is that sparrow? A case study: colour aberrations in the House Sparrow Passer domesticus. International Studies on Sparrows 36: VAN GROUW, H What colour is that bird? The causes and recognition of common colour aberrations in birds. British Birds 106: WARNER, R. E Recent history and ecology of the Laysan Duck. Condor 65:3 23. The Wilson Journal of Ornithology 128(4): , 2016 Stopover on Galapagos During Autumn Migration of Bobolinks (Dolichonyx oryzivorus) Noah G. Perlut 1, 3 and Rosalind Renfrew 2 ABSTRACT. The Bobolink (Dolichonyx oryzivorus) is the only landbird species that is known to stop every year in Galapagos while migrating; however, its stopover ecology while on the islands is unknown. In October 2015, we searched for and captured Bobolinks in the highlands of San Cristóbal. We found Bobolinks in two fields, separated by 9.15 km, at ~425 m elevation. Average daily counts of Bobolinks on these two fields were and individuals. We caught nine individuals; body mass and fat reserves varied from g and no fat reserves to % reserves, respectively. Both fields were dominated by grasses ranging in height from 30 cm to.100 cm, and included purple cuphea (Cuphea sp.). Other habitats we surveyed, where we did not observe Bobolinks, included 1 Department of Environmental Studies, 11 Hills Beach Road, University of New England, Biddeford, ME 04005, USA. 2 Vermont Center for Ecostudies, P.O. Box 420, Norwich, VT 05055, USA. 3 Corresponding author; nperlut@une.edu closely cropped grass (5 10 cm), taller grasses with seed and with scattered to dense guava trees (Psidium guajava), and small ( ha) corn plantations with seed. Six of the birds we caught had seeds of Drymaria cordata entwined in their feathers; while native to the Galapagos, this plant is highly invasive in other parts of the world. Received 23 November Accepted 4 February Key words: Bobolink, Dolichonyx oryzivorus, fat storage, Galapagos, habitat selection, migratory stopover, San Cristóbal. In September 1835, Charles Darwin collected a single Bobolink (Dolichonyx oryzivorus) duringhis5daysonsancristóbal, the eastern-most island in Galapagos, Ecuador (Darwin (1963). The Bobolink was unusual in his bird collection from Galapagos for two reasons. First, it was a
Double-crested Cormorant with aberrant pale plumage
Double-crested Cormorant with aberrant pale plumage Jean Iron Introduction A Double-crested Cormorant (Phalacrocorax auritus) with a strikingly pale plumage was reported by Darlene Deemert in Barrie, Ontario,
More informationFIRST RECORD OF CHROMATIC ABERRATIONS IN THE CREAM-BACKED WOODPECKER (CAMPEPHILUS LEUCOPOGON, PICIDAE)
SHORT COMMUNICATIONS ORNITOLOGIA NEOTROPICAL 26: 283 287, 2015 The Neotropical Ornithological Society FIRST RECORD OF CHROMATIC ABERRATIONS IN THE CREAM-BACKED WOODPECKER (CAMPEPHILUS LEUCOPOGON, PICIDAE)
More informationFE ATURED PHOTO. White Feathers. typically found in any wild bird population. Why so many white Eared Grebes at one location?
Why So Many White Eared Grebes? Possible interactions among leucism, molt, and pollutants Peter Pyle Bolinas, California ppyle@birdpop.org Mia McPherson Salt Lake City, Utah mm@onthewingphotography.com
More informationEggs, Nests, and Incubation Behavior of the Moustached Wren (Thryothorus genibarbis) in Manu National Park, Perú
SHORT COMMUNICATIONS 623 The Wilson Journal of Ornithology 121(3):623 627, 2009 Eggs, Nests, and Incubation Behavior of the Moustached Wren (Thryothorus genibarbis) in Manu National Park, Perú Gustavo
More informationFIRST RECORD OF Platemys platycephala melanonota ERNST,
FIRST RECORD OF Platemys platycephala melanonota ERNST, 1984 (REPTILIA, TESTUDINES, CHELIDAE) FOR THE BRAZILIAN AMAZON Telêmaco Jason Mendes-Pinto 1,2 Sergio Marques de Souza 2 Richard Carl Vogt 2 Rafael
More informationMexico and Central America have a wide variety of diurnal raptors, due to their connection
INTRODUCTION Mexico and Central America have a wide variety of diurnal raptors, due to their connection to both North America and South America and a broad diversity of habitats from temperate to tropical.
More informationStudying Gene Frequencies in a Population of Domestic Cats
Studying Gene Frequencies in a Population of Domestic Cats Linda K. Ellis Department of Biology Monmouth University Edison Hall, 400 Cedar Avenue, W. Long Branch, NJ 07764 USA lellis@monmouth.edu Description:
More informationReptilia, Squamata, Amphisbaenidae, Anops bilabialatus : Distribution extension, meristic data, and conservation.
Reptilia, Squamata, Amphisbaenidae, Anops bilabialatus : Distribution extension, meristic data, and conservation. Tamí Mott 1 Drausio Honorio Morais 2 Ricardo Alexandre Kawashita-Ribeiro 3 1 Departamento
More informationAfring News. An electronic journal published by SAFRING, Animal Demography Unit at the University of Cape Town
Afring News An electronic journal published by SAFRING, Animal Demography Unit at the University of Cape Town Afring News accepts papers containing ringing information about birds. This includes interesting
More informationTropical Screech Owl - Megascops choliba
Tropical Screech Owl - Megascops choliba Formerly Otus choliba Description: A relatively small screech owl with short ear tufts that are raised mostly during daytime. There are grey-brown, brown and rufous
More informationNATURAL AND SEXUAL VARIATION
NATURAL AND SEXUAL VARIATION Edward H. Burtt, Jr. Department of Zoology Ohio Wesleyan University Delaware, OH 43015 INTRODUCTION The Darwinian concept of evolution via natural selection is based on three
More informationBEAK AND FEATHER DYSTROPHY IN WILD SULPHUR-CRESTED COCKATOOS (CACATUA GALERITA)
BEAK AND FEATHER DYSTROPHY IN WILD SULPHUR-CRESTED COCKATOOS (CACATUA GALERITA) Author(s): Steven McOrist, Douglas G. Black, David A. Pass, Peter C. Scott, and John Marshall Source: Journal of Wildlife
More informationIn earlier times, when little or nothing was
What colour is that bird? The causes and recognition of common colour aberrations in birds Hein van Grouw Abstract The naming of colour aberrations in birds still causes widespread difficulty and confusion.
More informationParental Care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) Seedeaters
879 The Wilson Journal of Ornithology 120(4):879 883, 2008 Parental Care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) Seedeaters Carolina Facchinetti, 1 Alejandro G. Di Giacomo,
More information646 General Notes [Auk, Vol. 93. the fauna, the number of different birds at Reddick stands at 66, 64 of which have
646 General Notes [Auk, Vol. 93 the fauna, the number of different birds at Reddick stands at 66, 64 of which have been identified to species. I thank Pierce Brodkorb for the opportunity to study fossils
More informationSeeds. Rough pastures. Insects. Worms. Farmland. Larvae. Sand-dunes. Insects. Farmland. Worms. Moorland Sand-dunes. Seeds. Berries. Insects.
Common Name Skylark Meadow pipit Rook Scientific Name Alauda arvensis Anthus pratensis Corvus frugilegus Irish Name Resident/ Migrant Habitat Food Distinctive features Fuiseog Resident Moorland Long streaked
More information2 How Does Evolution Happen?
CHAPTER 10 2 How Does Evolution Happen? SECTION The Evolution of Living Things 7.3.b California Science Standards BEFORE YOU READ After you read this section, you should be able to answer these questions:
More informationStatus and Distribution of the Eastern Hoolock Gibbon (Hoolock leuconedys) in Mehao Wildlife Sanctuary, Arunachal Pradesh, India
Status and Distribution of the Eastern Hoolock Gibbon (Hoolock leuconedys) in Mehao Wildlife Sanctuary, Arunachal Pradesh, India Authors: Dilip Chetry, Rekha Chetry, Kumud Ghosh, and Alok Kumar Singh Source:
More informationColor On, Color Off Multidisciplinary Classroom Activities
Young Naturalists Teachers Guide Prepared by Cindy VanBrunt, Professional Education Department, Bemidji State University Summary Suggested reading levels: Total words: Materials: Color On, Color Off Multidisciplinary
More informationAfring News. An electronic journal published by SAFRING, Animal Demography Unit at the University of Cape Town
Afring News An electronic journal published by SAFRING, Animal Demography Unit at the University of Cape Town Afring News online accepts papers containing ringing information about birds. This includes
More informationName. Period. Student Activity: Dichotomous Key. 1a. 1b. 2a. 2b. 3a. 3b. 4a. 4b. 5a. 5b. 6a. 6b. 7a. 7b. 8a.
Name Period Student Activity: Dichotomous Key 1a. 1b. Question Identify/Go to 2a. 2b. 3a. 3b. 4a. 4b. 5a. 5b. 6a. 6b. 7a. 7b. 8a. 8b. Name Period CLASSIFICATION KEY FOR FISHES OF UTAH LAKE Examine the
More informationMuseu de História Natural do Funchal. Madeira 31.XII.2012 No. 235
1 ISSN 0523-7904 B O C A G I A N A Museu de História Natural do Funchal Madeira 31.XII.2012 No. 235 FIRST DATA ON BREEDING OF MANDARIN DUCK AIX GALERICULATA IN THE MADEIRAN ARCHIPELAGO BY DOMINGO TRUJILLO
More informationCarotenoid-based plumage coloration and aggression during molt in male house finches
Carotenoid-based plumage coloration and aggression during molt in male house finches Kevin J. McGraw 1), William Medina-Jerez 2) & Heather Adams (School of Life Sciences, Arizona State University, Tempe,
More informationA Lymphosarcoma in an Atlantic Salmon (Salmo salar)
A Lymphosarcoma in an Atlantic Salmon (Salmo salar) Authors: Paul R. Bowser, Marilyn J. Wolfe, and Timothy Wallbridge Source: Journal of Wildlife Diseases, 23(4) : 698-701 Published By: Wildlife Disease
More informationHIGH INCIDENCE OF COLOR ABERRATIONS IN THE PLAIN-FLANKED RAIL (RALLUS WETMOREI)
SHORT COMMUNICATIONS ORNITOLOGIA NEOTROPICAL 26: 193 199, 2015 The Neotropical Ornithological Society HIGH INCIDENCE OF COLOR ABERRATIONS IN THE PLAIN-FLANKED RAIL (RALLUS WETMOREI) Adriana Rodríguez-Ferraro
More informationNews, Views, & Comments. Editor : Robert.J. Rodgers, Nova Scotia, Canada. Co-Editor : Jith Peter Palakkad, India.
Introduction - By Jith Peter. The Pigeon Genetics Newsletter News, Views, & Comments Editor : Robert.J. Rodgers, Nova Scotia, Canada. Co-Editor : Jith Peter Palakkad, India. February Issue 2017. ( One
More informationAGASSCOMNEWS. Welcome to our Special debut issue of AGASSCOM NEWS!
Welcome to our Special debut issue of AGASSCOM NEWS! We are excited and happy to announce the birth of our Agapornis Show Standards Center of Ornithology Management and our trademark WORLD AGAPORNIS CONFEDERATION
More informationDuration of Attachment by Mites and Ticks on the Iguanid Lizards Sceloporus graciosus and Uta stansburiana
Duration of Attachment by Mites and Ticks on the Iguanid Lizards Sceloporus graciosus and Uta stansburiana Authors: Stephen R. Goldberg, and Charles R. Bursey Source: Journal of Wildlife Diseases, 27(4)
More informationCapture and Marking of Birds: Field Methods for European Starlings
WLF 315 Wildlife Ecology I Lab Fall 2012 Capture and Marking of Birds: Field Methods for European Starlings Objectives: 1. Introduce field methods for capturing and marking birds. 2. Gain experience in
More information. see the role of the environment as a selecting agent
Name Period Date Introduction Environmental conditions act as selecting agents because they select organisms with the most beneficial traits to become the parents of the next generation. Within a species,
More informationThe Hills Checklist of Birds That Have Been Seen as of
The Hills Checklist of Birds That Have Been Seen as of 3.6.18 1 2 3 4 COMMON NAME SEASON AND ABUNDANCE Date Date Date Date Geese and Ducks o o o o Greater White-fronted Goose Winter, rare o o o o Snow
More informationDacnis cayana (Blue Dacnis or Turquoise Honeycreeper)
Dacnis cayana (Blue Dacnis or Turquoise Honeycreeper) Family: Thraupidae (Tanagers and Honeycreepers) Order: Passeriformes (Perching Birds) Class: Aves (Birds) Fig.1. Blue dacnis, Dacnis cayana, male (top)
More informationWHITE-FEATHERED DOMESTICATED FANCY PIGEONS OF BANGLADESH
WHITE-FEATHERED DOMESTICATED FANCY PIGEONS OF BANGLADESH M Ashraful Kabir Lecturer in Zoology, Cantonment Public School and College, Saidpur Cantonment 5311, District- Nilphamari, Bangladesh ABSTRACT In
More informationCommon Birds Around Denver. Seen in All Seasons Depending on the Habitat
Common Birds Around Denver Seen in All Seasons Depending on the Habitat Near and Around Water Canada Goose (golf courses) Mallard Ring-billed Gull (parking lots) American Coot Killdeer Canada Goose Canada
More informationNEST ASSOCIATES AND COLONY TREES OF THE RED- RUMPED CACIQUE (CACICUS HAEMORRHOUS, ICTERIDAE)
SHORT COMMUNICATIONS ORNITOLOGIA NEOTROPICAL 20: 623 627, 2009 The Neotropical Ornithological Society NEST ASSOCIATES AND COLONY TREES OF THE RED- RUMPED CACIQUE (CACICUS HAEMORRHOUS, ICTERIDAE) Marco
More informationNotes 8.3: Types of Inheritance. How do living organisms pass traits from one generation to the next? Pages 184, 237,
Notes 8.3: Types of Inheritance How do living organisms pass traits from one generation to the next? Pages 184, 237, 242-244 Think about it You have a purple flower, you know purple is the dominate allele,
More informationEvolution of Birds. Summary:
Oregon State Standards OR Science 7.1, 7.2, 7.3, 7.3S.1, 7.3S.2 8.1, 8.2, 8.2L.1, 8.3, 8.3S.1, 8.3S.2 H.1, H.2, H.2L.4, H.2L.5, H.3, H.3S.1, H.3S.2, H.3S.3 Summary: Students create phylogenetic trees to
More informationEvolution. Geology. Objectives. Key Terms SECTION 2
SECTION 2 Evolution Organisms tend to be well suited to where they live and what they do. Figure 7 shows a chameleon (kuh MEEL ee uhn) capturing an insect. Insects are not easy to catch, so how does the
More informationNEW RECORD OF NESTING SITE OF TROPICAL SCREECH OWL (MEGASCOPS CHOLIBA) FROM BRAZIL
SHORT COMMUNICATIONS ORNITOLOGIA NEOTROPICAL 23: 137 141, 2012 The Neotropical Ornithological Society NEW RECORD OF NESTING SITE OF TROPICAL SCREECH OWL (MEGASCOPS CHOLIBA) FROM BRAZIL Ricardo M. Claudino
More informationConservation of Scinax alcatraz (Anura: Hylidae): Captive breeding and in situ monitoring of a critically endangered tree-frog species
REPORT TO AMPHIBIAN ARK OF THE PROJECT: Conservation of Scinax alcatraz (Anura: Hylidae): Captive breeding and in situ monitoring of a critically endangered tree-frog species Project Leader: Cybele Sabino
More informationGenetics Problems. Character Dominant Recessive
Genetics Problems 1. A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for
More informationAn interesting white necklace mutation. PIGEON GENETICS NEWSLETTER VERSION JULY 2010
An interesting white necklace mutation. PIGEON GENETICS NEWSLETTER EMAIL VERSION JULY 2010 EDITOR: LESTER PAUL GIBSON PAGE 881 417 S. Chillicothe St.; Plain City, OH 43064 I have wrapped up my 17 years
More informationCAGED BIRDS SECTION BOONAH SHOW 1-2 JUNE, 2018
Section 9 CAGED BIRDS CHIEF STEWARD: Mr. Viv May Phone. 07 5463 5899 Steward: Mrs. Pauline May & Bradley May ENTRY FEE:- $1.00 ENTRIES CLOSE:- Friday 25th MAY 2018 NO ENTRIES WILL BE TAKEN ON DAY OF SHOW
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 informationLipochrome Colorbred Canaries (All Clear Birds, No Melanin) Recommended by the National Colorbred Association
DIVISION 8 Lipochrome Colorbred Canaries (All Clear Birds, No Melanin) Recommended by the National Colorbred Association Lipochrome Color Position Size Conformation Feather Condition TOTAL 50 pts. 15 pts.
More informationThe Hypostatic Genotype of the Recessive White Prat Breed of Chickens
The Hypostatic Genotype of the Recessive White Prat Breed of Chickens J. L. CAMPO Area de Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Apartado 8111, 28080 Madrid,
More informationEUROPEAN STARLING HOUSE FINCH
EUROPEAN STARLING Scientific Name: Sturnus vulgaris Size: 7.5-8.5 " (19-21 cm) Shape: Short tail; plump body Color: Blackbird with shiny feathers; yellow bill in springtime. Habitat: Cities, parks, farms,
More informationCOOPERATIVE BREEDING IN THE TROPICAL MOCKINGBIRD (MIMUS GILVUS) IN THE PANAMA CANAL ZONE
SHORT COMMUNICATIONS ORNITOLOGIA NEOTROPICAL 15: 417 421, 2004 The Neotropical Ornithological Society COOPERATIVE BREEDING IN THE TROPICAL MOCKINGBIRD (MIMUS GILVUS) IN THE PANAMA CANAL ZONE Eugene S.
More informationEvolution and Natural Selection. Peekskill High School Biology by: First-name Last-name
Evolution and Natural Selection Peekskill High School Biology by: First-name Last-name 2 Charles Darwin Darwin explored these islands from April through October 1835. Entire voyage of The Beagle: Dec 1831
More informationWilson Bull., 94(2), 1982, pp
GENERAL NOTES 219 Wilson Bull., 94(2), 1982, pp. 219-223 A review of hybridization between Sialia sialis and S. currucoides.-hybridiza- tion between Eastern Bluebirds (S. sialis) and Mountain Bluebirds
More informationThe Theory of Evolution
The Theory of Evolution Darwin Notes Pt. 2 Charles Darwin Darwin was born in 1809 in England. He was from a strong Christian family. Age 16, Darwin was sent by his father to study medicine He left and
More informationCharles Darwin. The Theory of Evolution
The Theory of Evolution Darwin Notes Pt. 2 Charles Darwin Darwin was born in 1809 in England. He was from a strong Christian family. Age 16, Darwin was sent by his father to study medicine He left and
More informationVisit for Videos, Questions and Revision Notes.
Q. Coat colour in mice is controlled by two genes, each with two alleles. The genes are on different chromosomes. One gene controls the pigment colour. The presence of allele A results in a yellow and
More informationIncidence and Effect of Hippoboscid Flies in Relation to Mycoplasmal Conjunctivitis in House Finches in Georgia
Incidence and Effect of Hippoboscid Flies in Relation to Mycoplasmal Conjunctivitis in House Finches in Georgia Andrew K. Davis Warnell School of Forestry and Natural Resources University of Georgia Athens,
More informationAnas clypeata (Northern Shoveler)
Anas clypeata (Northern Shoveler) Family: Anatidae (Ducks and Geese) Order: Anseriformes (Waterfowl) Class: Aves (Birds) Fig. 1. Northern shoveler, Anas clypeata. [http://www.ducks.org/hunting/waterfowl-id/northern-shoveler,
More informationVARIATION AND MIGRATION OVERLAP IN FLIGHT FEATHER MOLT OF THE ROSE-BREASTED GROSBEAK
Wilson Bull., 95(4), 1983, pp. 621427 VARIATION AND MIGRATION OVERLAP IN FLIGHT FEATHER MOLT OF THE ROSE-BREASTED GROSBEAK PETERF. CANNELL,JEFFREYD. CHERRY,AND KENNETH C. PARKES Variation in body plumage
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 informationdoi: /
doi: 10.2326/1347-0558-7.2.117 ORIGINAL ARTICLE Methods for correcting plumage color fading in the Barn Swallow Masaru HASEGAWA 1,#, Emi ARAI 2, Mamoru WATANABE 1 and Masahiko NAKAMURA 2 1 Graduate School
More informationMARY F. WILLSON RESULTS
SEED SIZE PREFERENCE IN FINCHES S MARY F. WILLSON EED preferences of several finch species have been explored in the labora- tory (Willson, 1971; Willson and Harmeson, in press) using both wild and commercial
More informationBlue is the New Black How genes can influence appearance.
Blue is the New Black How genes can influence appearance. Backstory Humans have selectively bred plants and animals for thousands of years in order to create variations most useful to our purposes. This
More informationNAME: DATE: SECTION:
NAME: DATE: SECTION: MCAS PREP PACKET EVOLUTION AND BIODIVERSITY 1. Which of the following observations best supports the conclusion that dolphins and sharks do not have a recent common ancestor? A. Dolphins
More informationDarwin's Fancy with Finches Lexile 940L
arwin's Fancy with Finches Lexile 940L 1 Whales are mammals that live in water. They can hold their breath under the water for a long time, yet still need to go up to the surface to breathe. This is evidence
More informationProcnias averano (Bearded Bellbird)
Procnias averano (Bearded Bellbird) Family: Cotingidae (Bellbirds and Cotingas) Order: Passeriformes (Perching Birds) Class: Aves (Birds) Fig. 1. Bearded bellbird, Procnias averano. [http://www.oiseaux.net/photos/steve.garvie/bearded.bellbird.5.html
More informationCOLORADO LYNX DEN SITE HABITAT PROGRESS REPORT 2006
COLORADO LYNX DEN SITE HABITAT PROGRESS REPORT 2006 by Grant Merrill Tanya Shenk U.S. Forest Service and Colorado Division of Wildlife Cooperative Effort September 30, 2006 INTRODUCTION Lynx (Lynx canadensis)
More informationImmature Plumages of the Eastern Imperial Eagle Aquila heliaca
Chancellor, R. D. & B.-U. Meyburg eds. 2004 Raptors Worldwide WWGBP/MME Immature Plumages of the Eastern Imperial Eagle Aquila heliaca William S. Clark ABSTRACT The Eastern Imperial Eagles, Aquila heliaca,
More information77 Eurasian Teal. Put your logo here. EURASIAN TEAL (Anas crecca) IDENTIFICATION AGEING
Teal. Breeding plumage. Sexing. Pattern of head: left male; right female. Teal. Spring. Breeding plumage. Adult. Male (18-II) EURASIAN TEAL (Anas crecca) IDENTIFICATION 34-38 cm. Male in winter with chesnut
More informationSample Size Adapted from Schmidt, et al Life All Around Us.
Lab 9, Biol-1, C. Briggs, revised Spring 2018 Sample Size Adapted from Schmidt, et al. 2006. Life All Around Us. Name: Lab day of week: Objectives Observe the benefits of large sample sizes. Instructions
More informationThe Pigeon Genetics Newsletter
The Pigeon Genetics Newsletter News, Views, and Comments. Editor: R J Rodgers, Nova Scotia, Canada Co-Editor: Jith Peter, Palakkad, India March 2016, Volume 4, page 1 Section # (1) Beginner Text &Photos:
More informationWas the Spotted Horse an Imaginary Creature? g.org/sciencenow/2011/11/was-the-spotted-horse-an-imagina.html
Was the Spotted Horse an Imaginary Creature? http://news.sciencema g.org/sciencenow/2011/11/was-the-spotted-horse-an-imagina.html 1 Genotypes of predomestic horses match phenotypes painted in Paleolithic
More informationBREWER'S DUCK A Hybrid with a History
Correction to the publication Bastaards/Hybrids in Aviculture Europe, December 2008 BREWER'S DUCK A Hybrid with a History By Jörn Lehmhus The duck seen below, labelled as a hybrid Mallard x Teal in the
More informationAging by molt patterns of flight feathers of non adult Steller s Sea Eagle
First Symposium on Steller s and White-tailed Sea Eagles in East Asia pp. 11-16, 2000 UETA, M. & MCGRADY, M.J. (eds) Wild Bird Society of Japan, Tokyo Japan Aging by molt patterns of flight feathers of
More informationYOUNG MATURING PIGEONS By Mick Bassett
SPRING - AND SOME THOUGHTS ON THE NEXT GENERATION YOUNG MATURING PIGEONS By Mick Bassett This F³ Macedonian Shield Owl baby is quite a surprise in the Colour. My first thought was it looked like a Dunn!
More informationWHAT COLOUR IS THAT SPARROW? A CASE STUDY: COLOUR ABERRATIONS IN THE HOUSE SPARROW PASSER DOMESTICUS ABSTRACT
Intern. Stud. Sparrows 2012, 36: 30-55 Hein van GROUW Curator, Bird Group, Dept. of Life Sciences, The Natural History Museum, Akeman Street, Tring, Herts, HP23 6AP, UK. E-mail: h.van-grouw@nhm.ac.uk WHAT
More informationStation 1: Tracing the path of an autosomal recessive trait
Station 1: Tracing the path of an autosomal recessive trait Trait: Falconi anemia Forms of the trait: The dominant form is typical bone marrow function - in other words, no anemia. The recessive form is
More informationReading Science! Name: Date: Darwin s Fancy with Finches Lexile 1190L
7.11/.12: daptation of Species Name: ate: arwin s Fancy with Finches Lexile 1190L 1 2 Whales are mammals that live in water and can hold their breath underwater for a long time, yet need to breathe air
More informationTwo Sets to Build Difference Edward I. Maxwell
TwoSetstoBuildDifference Two Sets to Build Difference Edward I. Maxwell You are most basically a blend of your biological parents. Your genetic material is a combinationoftheirgeneticmaterial.ahumantypicallyhas46chromosomesthatcontainhis
More informationThe color and patterning of pigmentation in cats, dogs, mice horses and other mammals results from the interaction of several different genes
The color and patterning of pigmentation in cats, dogs, mice horses and other mammals results from the interaction of several different genes 1 Gene Interactions: Specific alleles of one gene mask or modify
More informationKingdom: Animalia. Phylum: Chordata. Class: Aves. Order: 28 orders Passeriformes- most. Strigiformes- owls. Piciformes- woodpeckers
Snowball 3:54 1 2 Kingdom: Animalia Phylum: Chordata Class: Aves Order: 28 orders Passeriformes- most Strigiformes- owls Piciformes- woodpeckers Anseriformes- ducks & geese Osprey-Gone Fishin 1:58 3 Similar
More informationPlumage and its Function in birds
Plumage and its Function in birds Basic distinction between: Molt = feather replacement and Plumage = Feather coat Basic (prebasic molt) - renewed plumage postbreeding Alternate (prealternate molt) - breeding
More informationEvolution by Natural Selection
Evolution by Natural Selection 2006-2007 DOCTRINE But the Fossil record OBSERVATION Quaternary 1.5 Tertiary 63 Cretaceous 135 Jurassic 180 Triassic 225 Permian 280 Carboniferous 350 Devonian 400 Silurian
More informationBehavioural Ecology of Red-Whiskered Bulbul as Observed Locally in Halisahar, West Bengal, India
Behavioural Ecology of Red-Whiskered Bulbul as Observed Locally in Halisahar, West Bengal, India Sonali Bhattacharya and Sudipta Majumdar nee Paul Department of Zoology, Rishi Bankim Chandra College, Naihati,
More informationProblem 1. What is the simplest explanation for the inheritance of these colors in chickens?
Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance
More informationProblem 1. What is the simplest explanation for the inheritance of these colors in chickens?
Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance
More informationTwo Sets to Build Difference Edward I. Maxwell
TwoSetstoBuildDifference Two Sets to Build Difference Edward I. Maxwell You are most basically a blend of your biological parents. Your genetic material is a combinationoftheirgeneticmaterial.ahumantypicallyhas46chromosomesthatcontainhis
More informationAgenda. Warm-up: Look in your notebook for your grades. Review Notes on Genetic Variation Rat Island. Retake: Monday- last day!!!
Agenda Warm-up: Look in your notebook for your grades Were you missing any of the assignments? Review Notes on Genetic Variation Rat Island Retake: Monday- last day!!! Gene Pools 1.What makes a species?
More informationIdentification. Waterfowl. The Shores of Long Bayou
Identification of Waterfowl at The Shores of Long Bayou Ernie Franke eafranke@tampabay.rr.com April 2015 Easy Identification of the Waterfowl Many Birds Look Alike: Great Blue Heron and Tri-Colored (Louisiana)
More informationPATTERNS OF EVOLUTION STATIONS
PATTERNS OF EVOLUTION STATIONS STATION 1 Vocabulary Review: GIVE AN EXAMPLE OF EACH: 1. Stabilizing selection 2. Directional selection 3. Disruptive selection STATION 2 SKETCH AND LABEL EACH GRAPH STATION
More informationCommittee Members: Brad Child/ Chairman
THE AMERICAN SHOW RACER COLOR GUIDELINE Originally published January 21, 1988 Committee Members: Brad Child/ Chairman Bob Trane, Norm McClister, Amos Hodson Castle Child (Printing) Updated with new colors
More information1/27/10 More complications to Mendel
1/27/10 More complications to Mendel Required Reading: The Interpretation of Genes Natural History 10/02 pg. 52-58 http://fire.biol.wwu.edu/trent/trent/interpretationofgenes.pdf NOTE: In this and subsequent
More informationNew Mexico Avian Protection (NMAP) Feather Identification Guide
New Mexico Avian Protection (NMAP) Feather Identification Guide It is very common to find only feathers as remains beneath a power line due to predation, length of elapsed time since the mortality, weather,
More informationNatural Selection Questions
Name period date assigned date due date returned Questions Procedure Look at the shapes of the bird beaks in the chart. Under each bird s picture, give at least two things you think it might eat based
More informationProblem 1. What is the simplest explanation for the inheritance of these colors in chickens?
Problem 1 A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white. What is the simplest explanation for the inheritance
More informationBreeding success of Greylag Geese on the Outer Hebrides, September 2016
Breeding success of Greylag Geese on the Outer Hebrides, September 2016 Wildfowl & Wetlands Trust Report Author Carl Mitchell September 2016 The Wildfowl & Wetlands Trust All rights reserved. No part of
More informationLife s Natural History = a record of Successions & Extinctions. Anaerobic Bacteria. Photosynthetic Bacteria. Green Algae. Multicellular Animals
Evolution by Natural Selection (Chapter 22) DOCTRINE TINTORETTO The Creation of the Animals 1550 The Fossil record OBSERVATION mya Quaternary 1.5 Tertiary 63 Cretaceous 135 Jurassic 180 Triassic 225 Permian
More informationMclL amqxq Sex Ratio in Wild Birds 85
Vol. 57] 194o J MclL amqxq Sex in Wild Birds 85 SEX RATIO IN WILD BIRDS BY E. A. MCILHENNY ORNITHOLOGISTS generally concede that there is considerable variation in the sex ratio of some species of wild
More informationCrotophaga major (Greater Ani)
Crotophaga major (Greater Ani) Family: Cuculidae (Cuckoos and Anis) Order: Cuculiformes (Cuckoos, Anis and Turacos) Class: Aves (Birds) Fig. 1. Greater ani, Crotophaga major. [http://www.birdforum.net/opus/greater_ani,
More informationLocal Grains and Free-Choice Feeding of Organic Layer Hens on Pasture at UBC Farm Introduction
Local Grains and Free-Choice Feeding of Organic Layer Hens on Pasture at UBC Farm Darin C. Bennett, Avian Research Centre, Jacob Slosberg, Centre for Sustainable Food Systems, Faculty of Land Food Systems,
More informationPlumages and wing spurs of Torrent Ducks Merganetta arm ata
Torrent Ducks 33 Plumages and wing spurs of Torrent Ducks Merganetta arm ata M ILTO N W. W ELLER i Introduction The Torrent Duck Merganetta armata of the Andean highlands is one of the most colourful and
More informationEvolution by Natural Selection
Evolution by Natural Selection 2006-2007 DOCTRINE TINTORETTO The Creation of the Animals 1550 But the Fossil record OBSERVATION Anaerobic Bacteria Photosynthetic Bacteria Dinosaurs Green Algae Multicellular
More information1 This question is about the evolution, genetics, behaviour and physiology of cats.
1 This question is about the evolution, genetics, behaviour and physiology of cats. Fig. 1.1 (on the insert) shows a Scottish wildcat, Felis sylvestris. Modern domestic cats evolved from a wild ancestor
More information