Verification of Unusual Sight Record
For Utah

Rec. # 2022-40

Common name:

Tennessee Warbler

Scientific name: Orethlylpis peregrina
Date: 9-7-2022
Time: 8:00AM
Length of time observed: less than a minute
Number: 1
Age: Adult
Sex: Male
Location: Irrigation ditch off Castleton - Gateway Road, near Beaver Creek.
County: Grand
Latilong: 38.577554,-109.174554
Elevation: 8150ft
Distance to bird: ~40ft
Optical equipment: 10x optically stabilized binoculars
Weather: Clear, sunny, slight breeze, mid 60's temp F
Light Conditions: Clear, light coming from behind us.
Description:        Size of bird: Warbler sized
(Description:)       Basic Shape: Warbler shaped
(Description:)  Overall Pattern: Olive Green back, gray head, white underneath
(Description:)            Bill Type: warbler - thin
Field Marks and
Identifying Characteristics:
We first saw this bird foraging in a scrub oak, 40 or less feet away, at or just below our eye level. It was smaller than nearby Yellow-rumped Warblers. It foraged in the scrub oak and flew across the ditch to an Aspen, where it continued to move through the foliage.
The initial view was from the rear. The combination of olive-green back and bright white underside indicated to me that this was not a typical bird for the area. Field marks noted verbally at the time: Olive-green back, gray cap with white supercilium extending behind the eye, all white underneath, including the undertail coverts which we had good views of. The bill was relatively thin and straight. There were no wing bars.
Song or call & method of delivery: No vocalizations were heard.
Behavior: Foraging in scrub oak and aspen trees, from about 4 feet to 15 feet off the ground.
Habitat: Mixed, scrub oak, aspen, pine.
Similar species and how
were they eliminated:
Vireos: Small size and bill shape, along with lack of wing bars eliminate Vireos.
Orange-crowned Warbler: Olive-green back with white underside and white undertail coverts eliminate Orange-crowned warbler.
Other warblers: Combination of olive-green back, white underside and white undertail coverts eliminate other warblers.
Previous experience with
this & similar species:
I have seen this species several times in California.
References consulted: Sibley bird App; National Geographic Field Guide to the Birds of North America 7th Edition; Birds Of The World, Cornell Ornithology Lab
Description from: From memory
Observer: Glenn Kincaid
Observer's address: 238 Miller Lane, Castle Valley Utah 84532
Observer's e-mail address: **
Other observers who independently identified this bird: Stephen Heinrich
Date prepared: 9-7-2022
Additional material:  
Additional comments: