2019 Broomfield Bald Eagle Watch Data Sheet
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1 2019 Broomfield Bald Eagle Watch Data Sheet Site Code Date Start Time End Time Observer Observation Pt. Sky Code Number of adult Bald Eagles detected 2 SL 3/5/2019 8:20 12:20 HNG A and Car PC Number of nestlings detected 0 Noise Start 58.2 End 60 Temp (F) Number of fledglings detected 0 Behaviors A P Perched 1. (A) NI Nest Incubating (L) NB Nest Brooding (1) NC Nest Const/Maint. (D) FS Feeding Self (C ) FY Feeding Young (M ) PR Preening (B) BR Branching FL Fledging SL Sleeping (E ) AI Aggressive Interact. (F) Fly to/from Nest/Perch (7) TE Territory Flight (8) NV Not Visible (9) C Courtship (G) Cop Copulate (H) Disturbance Indicators (DI) 1 Staring Intently 2 Raised hackles 3 Alert posture 4 Distress calls 2 (three distinctive calls of nesting birds in response to humans) a. chatter call à 3 4 intro notes w/ short gasps of silence (<1s) followed by rapid sequence of descending notes, usually 6 9 notes (kwit kwit kwit kwit kee kee kee kee kee) b. "peal high pitched, prolonged, gull like cry, repeated 3 5 times c. wails (rare) 5 Flushing 6* Standing over their eggs (For an extended period > 10 min. notify super; > 20 minutes Stop Work) 7* Standing on the side of nest (For an extended period > 10 min notify super; > 20 minutes Stop Work) 8* Absence from the nest for an extended period 9 Direct flight toward construction, particularly if vocalizing while flying 10 Vocalization during flight in the vicinity of construction 2. Any distress call must be investigated to determine cause and any construction or human activity that may be responsible for the distress call, must be halted or modified immediately. *. Applies to incubation /brooding periods once chicks hatch standing in or on the side of the nest is normal. Absence from nest also common A. The alpha numeric codes in parenthesis correspond to FRNBES behavior codes Please include additional notes and comments below: An adult bald eagle (A1) was observed incubating and one adult bald (A2) was observed perched in trees south of nest at the start of the survey at 8:20 am. At 10:26 am, A1 left the nest to perch in trees to the south and A2 began incubating until 11:18 when A1 returned for another incubation exchange. A1 incubated for the remainder of the survey. Several red tail hawks were observed during the survey. Construction activities were consistently performed in Zones A and B, with work including framing, using nail guns, and trucks moving about with back up alarms.
2 Plumage Y Young JU Juvenile SU Sub Adult AD Adult Eagle ID Examples A1 Adult 1 A2 Adult 2 Y1 First Eaglet Y2 Second Eaglet Y3 Third Eaglet Speed Wind Codes Sky Codes (mph) Description CL Clear 0 0 Smoke rises vertically PC Partly Cloudy Wind direction visible in smoke OC Overcast Wind felt on face, leaves rustle DR Drizzle Leaves and smaller twigs in constant motion RA Rain Small branches sway SN Snow Smaller trees sway SL Sleet/hail Large branches in motion FH Fog/Haze Whole trees in motion Used as a back up to anemometer Photo (s)
3 Time (Continuous) 3 min. obs. Behavior Disturbance 3 Notes /comments/loc 2. A1 A2 Y1 Y2 Y3 Type DI Spd. Dir. Wind :20 0 NI P3 constr. 0 A1 in nest incubating, A2 perched in tree south of nest (Perch A) 8:23 NI P3 constr. 0 8:26 NI P3 constr. 0 8:29 NI P3 constr. 0 red tailed hawk in Perch B 8:32 NI P3 constr W 8:35 NI PR constr. 0 2nd red tailed hawk in Perch B, some movement by A1 in nest 8:38 NI P3 Jet high 0 jet high overhead, 8:41 NI P3 constr. 0 8:44 NI P3 plane 0 small plane to west; 8:47 NI P3 jet 0 jet overhead; 8:50 NI P3 constr. 0 8:53 NI P3 jet 0 jet noise only; 8:54 NI P3 jet 0 small jet to west; 8:56 NI NV constr. 0 A2 gone 8:59 NI NV constr W 9:00 NI P3 jet 0 A2 back from south, cleaning beak 9:01 NI Fly constr. 0 A2 fly to nest tree 9:02 NI P2 constr. 0 A2 perched atop nest tree, some vocalizations 9:05 NI PR jet noise 0 A2 preening 9:06 NI P2 jet noise 0 9:08 NI P2 constr. 0 9:09 NI P2 jet 0 jet high overhead 9:11 NI P2 constr. 0 9:14 NI P2 constr. 0 9:16 NI P2 train 0 Train from S to N 9:17 NI P2 train 0 9:18 NI P2 train end 0 train end 9:20 NI P2 constr. 0 9:23 NI P2 constr. 0 Perch type = 1. On nest; 2. In nest tree (outside of nest); 3. < 50 m. outside of nest tree; 4. > m from nest; m. from nest: 6. >1k from nest. mark locations on attached map Mark disturbance on BBC property on attached map (Figure 2) Disturbance Type includes: construction, highway/traffic, train, aircraft, pedestrians, horseback riders, other
4 Time (Continuous) 3 min. obs. Behavior Disturbance 3 Notes /comments/loc 2. A1 A2 Y1 Y2 Y3 Type DI Spd. Dir. Wind 9:24 NI PR constr. 0 A2 preening 9:26 NI P2 constr. 0 A1 incubating, A2 perched 9:29 NI P2 constr. 0 9:32 NI P2 constr. 0 9:33 NI P2 constr NW 9:35 NI P2 constr. 0 9:37 NI P2 jet, constr. 0 jet, 9:38 NI P3 constr. 0 A2 left nest tree for trees just south 9:40 NI P3 small plane 0 small plane, 9:41 NI P3 constr. 0 9:42 NI P3 jet, constr. 0 jet high overhead, 9:44 NI P3 constr. 0 9:47 NI P3 constr. 0 only one red tailed hawk perched by tracks 9:50 NI P3 train 0 Train from S to N, some movement by A1 in nest 9:53 NI P3 train end 0 train end, 9:56 NI P3 constr. 0 9:59 NI P3 jet, constr. 0 jet overhead, 10:00 NI P3 jet, constr. 0 another jet overhead, 5.78 W 10:02 NI P3 constr. 0 10:05 NI P3 constr. 0 10:08 NI P3 constr. 0 10:11 NI P3 small jet 0 small jet to west, 10:12 NI P3 small plane 0 small plane over nest, 10:13 NI P3 jet, constr. 0 jet high overhead, 10:14 NI P3 constr. 0 movement in nest by A1 10:15 NI P3 small plane 0 small plane to west, 10:16 NI P3 small plane 0 small plane to west, 10:17 NI P3 constr. 0 10:20 NI P3 constr. 0 10:23 NI P3 constr. 0 10:26 Fly Fly constr. 0 A1 and A2 up 10:26 P3 P2 constr. 0 A1 moved to trees south of nest, A2 in nest tree
5 Time (Continuous) 3 min. obs. Behavior Disturbance 3 Notes /comments/loc 2. Wind A1 A2 Y1 Y2 Y3 Type DI Spd. Dir. 10:27 P3 P1 constr. 0 A1 in trees to south near Perch A, A2 in nest 10:27 P3 NI constr. 0 A1 perched, A2 incubating 10:29 P3 NI constr W 10:32 P3 NI constr. 0 10:35 P3 NI constr. 0 10:38 P3 NI constr. 0 10:41 P3 NI constr. 0 10:44 P3 NI constr. 0 10:47 P3 NI jet, constr. 0 jet overhead, 10:50 P3 NI constr. 0 10:53 P3 NI constr. 0 10:56 P3 NI constr. 0 10:59 P3 NI constr. 0 11:00 NV NI constr. 0 A1 gone from perch 11:02 NV NI constr W 11:05 NV NI constr. 0 11:08 NV NI constr. 0 11:09 NV NI airplane, constr. 0 airplane overhead, 11:11 NV NI constr. 0 11:14 NV NI constr. 0 11:17 Fly NI constr. 0 A1 flew in from south 11:17 P1 NI constr. 0 incubation exchange 11:18 NI P1 constr. 0 incubation exchange 11:18 NI P2 constr. 0 A2 moved to perch adjacent to nest 11:19 NI Fly constr. 0 A2 off to trees to south 11:20 NI P3 jet, constr. 0 A1 incubating, A2 perched to south; jet overhead 11:22 NI P3 small plane, constr 0 small plane, 11:23 NI P3 constr. 0 11:26 NI PR constr. 0 A2 preening 5.01 W 11:29 NI P3 constr. 0 11:30 NI P3 plane, constr. 0 airplane overhead, 11:32 NI PR constr. 0 A1 incubating, A2 preening
6 Time (Continuous) 3 min. obs. Behavior Disturbance 3 Notes /comments/loc 2. A1 A2 Y1 Y2 Y3 Type DI Spd. Dir. Wind 11:35 NI P3 constr. 0 A1 incubating, A2 perched 11:38 NI P3 constr. 0 11:41 NI P3 constr. 0 11:42 NI P3 small plane, constr 0 small plane to west, red tailed hawk perched near A2 11:43 NI PR constr. 0 A2 preening 11:44 NI P3 constr. 0 11:45 NI P3 airplane, constr. 0 airplane to west, 11:47 NI P3 constr. 0 11:50 NI P3 constr. 0 11:53 NI P3 constr. 0 11:55 NI P3 airplane, constr. 0 airplane overhead, red tailed hawk gone 11:56 NI P3 constr. 0 11:59 NI P3 airplane, constr. 0 another airplane, 7.58 W 12:02 NI P3 constr. 0 12:02 NI P3 constr. 0 12:05 NI P3 constr. 0 12:08 NI P3 constr. 0 12:11 NI NV constr. 0 A1 incubating, A2 no longer visible 12:14 NI NV constr. 0 12:17 NI NV constr. 0 12:20 NI NV constr. 0, survey end.
7 Path: P:\6900 Projects\6950 Broomfield Eagle Evaluation\Maps\6950 Figure 2.mxd BNSF Railroad Northwest Parkway Zone C Zone A Via Varra [b Zone B Project Access Point Broomfield Eagle Evaluation [b Nest Location Disturbance Zone Boundary Figure 2 Title Image Source: DigitalGlobe October 10, Feet ± Prepared for: City of Broomfield Open Space and Trails File: 6950 Figure 2.mxd (WH) November 13, 2018 Portions of this document include intellectual property of ESRI and its licensors and are used herein under license. Copyright 2016 ESRI and its licensors. All rights reserved.
8 Path: P:\6900 Projects\6950 Broomfield Eagle Evaluation\Maps\6950 Figure 1 Perches.mxd Northwest Parkway Stearns Perch B Stearns Perch P Stearns Perch K (post) Stearns Nest [b Stearns Perch A A B Stearns Perch E Stearns Perch D Carbon Road C Stearns Perch C Stearns Perch G (Western Rock Creek) D Stearns Perch F Location Observation Point 50 Meter Buffer 200 Meter Buffer 1000 Meter Buffer Broomfield Eagle Evaluation Sections 21,22, 27, and 28, T1S, R69W; 6th PM UTM NAD 83: Zone 13N; xxxxxxme, xxxxxxxmn Longitude xxx.xxxxxx W, Latitude xx.xxxxxx N USGS Lafayette, CO Quadrangle City and County of Broomfield and Boulder County, Colorado Image Source: DigitalGlobe October 10, 2017 ± Feet Figure 1 Observation Points and Common Perch Locations Prepared for: City of Broomfield Open Space and Trails File: 6950 Figure 1 Perches.mxd (WH) January 16, 2019 Portions of this document include intellectual property of ESRI and its licensors and are used herein under license. Copyright 2016 ESRI and its licensors. All rights reserved.
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