2019 Broomfield Bald Eagle Watch Data Sheet

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Site Code End Time Observer Sky Code 2

SL 3:35PM AJW,JS OC

Noise Start End 55.8 Temp (F) 87 89

1 Staring Intently 2 Raised hackles 3 Alert posture

4 Distress calls² (three distinctive calls of nesting birds in response to humans) a.

b.

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

*. 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:

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.

“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)

"peal” high-pitched, prolonged, gull-like cry, repeated 3-5 times

Nest tree empty upon arrival. One adult bald eagle and the juvenile were spotted on separate fence posts north of nest tree. The second adult was observed soaring over the nest area roughly 20 minutes into the survey. The three eagles spent the entire survey time perched on the fence posts or on the ground in the field north of the nest tree. The second adult left the perch area almost an hour into the survey, and returned about an hour later with prey. The juvenile appeared to be feeding shortly after the second adult landed. Construction noises consisted of nail guns and heavy equipment. There were no disturbance behaviors observed throughout the survey.

PR - Preening (B)

FL - Fledging

TE- Territory Flight (8) NV - Not Visible (9)

Cop - Copulate (H) C - Courtship (G) BR - Branching

2019 Broomfield Bald Eagle Watch Data Sheet

6/27/2019 1:35PM

Behaviors^A P- Perched ^1.(A)

Date Start Time

SL - Sleeping (E ) NI - Nest Incubating (L) NB - Nest Brooding (1)

AI - Aggressive Interact. (F) Fly - to/from Nest/Perch (7) NC - Nest Const/Maint. (D) FS - Feeding Self (C ) FY - Feeding Young (M )

Observation Pt.

A

Disturbance Indicators (DI) 52.2

Number of adult Bald Eagles detected Number of nestlings detected

Number of fledglings detected 1

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Sky Codes

Speed (mph)

CL Clear 0

PC Partly Cloudy 1-3

OC Overcast 4-7

DR Drizzle 8-12

RA Rain 13-18

SN Snow 19-24

SL Sleet/hail 25-31

FH Fog/Haze 31+

Used as a back-up to anemometer

Photo (s)

Description Wind Codes

Large branches in motion 6

Smoke rises vertically Wind direction visible in smoke Wind felt on face, leaves rustle

Leaves and smaller twigs in constant motion 0

1 2 3

Smaller trees sway

6+ Whole trees in motion

Y3- Third Eaglet Plumage

Eagle ID Examples Y - Young

JU - Juvenile SU- Sub Adult AD- Adult

A1 - Adult 1

Y1 - First Eaglet A2 - Adult 2

Y2 - Second Eaglet

4 5

Small branches sway

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A1 A2 Y1 Y2 Y3 Type DI Spd. Dir.

13:35 13:35 NV NV NV Train 0 6.55 N

13:38 P5 NV P5 Construction 0

13:56 P5 Fly P5 Construction 0

13:59 P5 P5 P5 Construction 0

14:05 P5 P5 P5 Construction 0 4.47 N

14:14 P5 P5 Fly Construction 0

14:35 P5 NV P5 Construction 0 3.98 N

A2 lands near A1 & Y1; Y1 hops to ground A2 confirmed on fence post N of nest

A2 soaring; A1 & Y1 perched A2 not visible

No Change

1. Perch type = 1. On nest; 2. In nest tree (outside of nest); 3. < 50 m. outside of nest tree; 4. >51-200 m from nest; 5. 201-1000 m. from nest: 6. >1k from nest. mark locations on No Change

No Change

3. Mark disturbance on BBC property on attached map (Figure 2)

No Change No Change No Change No Change

All 3 perched N of nest A2 flies off fence post to South

No Change

A1 & Y1 perched on fence post N of nest. A2 not visible.

No Change

A1 & A2 perched on fence posts, Y1 in between them on ground No Change

No Change

Y1 flies to fence post near A1 & A2

Truck, ATV, horses within 50-100 yards of nest. No disturbance.

No Change

A2 observed soaring over nest area A2 heads NE away from nest Time

(Continuous) Behavior Disturbance³ Notes /comments/Loc ^2. Wind

Train at 82.3 dBA 3 min.

obs.

No Change No Change

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Disturbance Type includes: construction, highway/traffic, train, aircraft, pedestrians, horseback riders, other

A1 A2 Y1 Y2 Y3 Type DI Spd. Dir.

15:05 P5 NV P5 Construction 0 7.33 N

15:06 P5 NV Fly Construction 0

15:08 P5 NV NV Construction 0

15:17 P5 NV Fly/P5 Construction 0

15:23 P5 P5 FS Construction 0

15:35 P5 P5 P5 Construction 0 4.75 N

A2 & Y1 on ground, A1 perched on post No Change

No Change

Y1 flies onto fence post near A1 No Change

A2 observed flying over nest, S to N A2 lands on ground near A1 & Y1; Y1 hops to ground

Y1 appears to be feeding Y1 perched on ground, no longer feeding

No Change

Y1 flies off post to N over NW Pkwy Y1 not visble

Y1 observed on ground near A1 Y1 walking around near A1

No Change

A1 & Y1 perched N of nest; A2 not visible No Change

No Change No Change No Change No Change Time

(Continuous) 3 min.

obs. Behavior Disturbance³ Notes /comments/Loc ^2. Wind

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b[

k j k j

k j k

j

Stearns Perch H Stearns Perch B

Stearns Perch A

Stearns Perch C

Stearns Perch F Stearns Perch D

Stearns Perch E Stearns Nest

Northwest Parkway

Carbon Road

Stearns Perch G (Western Rock Creek)

C

D A

B

Prepared for: City of Broomfield Open Space and Trails

File: 6950 Figure 1 Perches.mxd (WH) January 4, 2019

±

Figure 1

Observation Points and Common Perch Locations Broomfield Eagle Evaluation

0 400 800

Feet

Location

Path: P:\6900 Projects\6950 Broomfield Eagle Evaluation\Maps\6950 Figure 1 Perches.mxd

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

k

j Observation Point 50 Meter Buffer 200 Meter Buffer 1000 Meter Buffer

Observed from observation point A.

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[ b

Northwest Parkway

Via Varra

Project Access Point

BNSF R ailroad

Zone A

Zone B Zone C

Prepared for: City of Broomfield Open Space and Trails File: 6950 Figure 2.mxd (WH) November 13, 2018

±

Figure 2 Title Broomfield Eagle Evaluation

0 200 400

Feet

Path: P:\6900 Projects\6950 Broomfield Eagle Evaluation\Maps\6950 Figure 2.mxd

[

b

Nest Location

Disturbance Zone Boundary

Construction occurred in zone A.