Verification of Unusual
Sight Record
For Utah
Rec. # 2010-44
Common name: |
Pomarine Jaeger |
Scientific name: | Stercorarius pomarinis |
Date: | April 25-29, 2010 |
Time: | various |
Length of time observed: | hour plus |
Number: | 1 |
Age: | Adult |
Sex: | male ? (based on tail length) |
Location: | Sand Hollow State Park |
County: | Washington |
Latilong: | 19 |
Elevation: | ~ 880 m |
Distance to bird: | 30-100 m |
Optical equipment: | 10 x 42 binoculars; 20-60x scope |
Weather: | windy and clear |
Light Conditions: | sunny |
Description: Size of bird: | |
(Description:) Basic Shape: | |
(Description:) Overall Pattern: | |
(Description:) Bill Type: | |
(Description:)
Field Marks and Identifying Characteristics: |
Heavy bodied jaeger with strong direct flight with deep wingbeats. Black/ dark
brown back and tail. white undersides, dark brown breastband, pale throat,
yellow on throat extending up on cheeks and nape, dark black cap. Bicolored
bill, dark at tip, pinkish toward base. Dark wings. Long tail with rounded
curled feathers (particularly pronounced in flight and sitting on water). In
flight, dark upperwings with pale primary shafts and underwing dark with large
crescent shaped white patch at base of primaries and second smaller patch
visible at close distance. (see photos) |
Song or call & method of delivery: | na |
Behavior: | flying and perching on water |
Habitat: | open water reservoir |
Similar
species and
how were they eliminated: |
Adult light-morphed Pomarine Jaeger is distinctive (shape of central tail feathers, size, bill length and coloration, etc.)/ |
Previous
experience with this & similar species: |
limited, but I've observed them a few times |
References consulted: | |
Description from: | Notes taken at time of sighting |
Observer: | Rick Fridell |
Observer's address: | Hurricane, UT |
Observer's e-mail address: | rfridell@burgoyne.com |
Other observers who independently identified this bird: | Rob Dobbs and Meribeth Huizinga |
Date prepared: | 10-05-10 |
Additional material: | Photos |
Additional_Comments: | . |