Verification of Unusual Sight Record
For Utah

Rec. # 2013-97

Common name:

Chestnut-sided Warbler

Scientific name: Setophaga pensylvanica
Date: May 28, 2011
Time: 11:30 am
Length of time observed: 15 minutes
Number: 1
Age: adult
Sex: male
Location: Dead Horse Point State Park
County: San Juan
Latilong: 38.488532, -109.737625
Distance to bird: 20 feet
Optical equipment: Nikon Action 7-15x35 binoculars
Weather: partly cloudy with slight breeze and temperatures in the 80's
Light Conditions: midday sun made conditions perfect
Description:        Size of bird: smaller than a song sparrow, larger than a gnatcatcher
(Description:)       Basic Shape: shaped like other Setophaga warblers
(Description:)  Overall Pattern: yellow cap, white cheeks, brown markings around eye and extending down malar, chestnut flanks, white/buffy wingbars, mottled brown/black/white back and wings, white belly chest and undertail coverts
(Description:)            Bill Type: small and pointed
Field Marks and
Identifying Characteristics:
The bird was a perfect example of a breeding plumage adult male Chestnut-sided Warbler. Yellow cap, black bill, dark brown around the eye and extending down the malar. Obvious chestnut flanks and two white/buffy wingbars. Underside was all white from throat to undertail coverts. Back, tail, and wings were a mixture of brown/black/white/tan but I'm not sure of the exact pattern.
Song or call & method of delivery:  
Behavior: Perched and foraging in sagebrush
Habitat: Arid sagebrush plateau
Similar species and how
were they eliminated:
No other warblers have similar markings but the only other warbler seen that day was Black-throated Gray and this bird had a yellow cap and chestnut flanks.
Previous experience with
this & similar species:
I'm from central Pennsylvania and have probably seen many individuals of this species over the last several years. I'm also familiar with all other Eastern and most Western warblers (except for Pacific NW and Alaska)
References consulted: The Sibley Field Guide to Birds of Western North America, The Sibley Field Guide to Birds of Eastern North America
Description from: Notes taken at the time of the sighting
Observer: Ian Gardner
Observer's address: 8670 Presidents Drive, Hummelstown, PA 17036
Observer's e-mail address: **
Other observers who independently identified this bird:  
Date prepared: December 29, 2013
Additional material: