Verification of Unusual Sight Record
For Utah

Rec. # 2019-05

Common name:

Tennessee Warbler

Scientific name: Oreothlypis peregrina
Date: November 9 and 10, 2018
Length of time observed:  
Age: Adult
Location: Royal Oaks Park
County: Washington
Distance to bird: Varied (8 to 30 feet)
Optical equipment: 10X50 binoculars and 500 mm lens
Light Conditions:  
Description:        Size of bird: Small songbird
(Description:)       Basic Shape: Typical warbler
(Description:)  Overall Pattern: Yellow, gray, pale
(Description:)            Bill Type: Thin, pointed
Field Marks and
Identifying Characteristics:
Olive-yellow warbler with very pale undertail coverts. Darker (greenish) back and lighter yellow beneath. Distinct, pale eyebrow. Faint wingbars. Dark eyeline. Straight bill. No streaking on underside.
(see photos)
Song or call & method of delivery: No memory of vocalizations
Behavior: Very actively foraging, mainly moving back and forth between two trees spaced about 30-40 yards apart.
Habitat: Small riparian corridor along Halfway Wash. Tamarisk, cottonwoods, willows, etc.
Similar species and how
were they eliminated:
Orange-crowned warbler: Would show yellow (not whitish) undertail coverts, slightly decurved bill, less distinct eyebrow, and complete lack of wingbars. Many orange-crowned warblers also show more of a grayish head, and blurry breast streaking.
Previous experience with
this & similar species:
Tennessee warbler: one observation (at this same location) one month earlier.

Orange-crowned warbler: Many (hundreds) of observations.
References consulted: National Geographic Field Guide
Various online resources
Description from: From memory
From photo(s) taken at the time of the sighting
Observer: Mike Schijf
Observer's address: 433 East 1050 South #3 St. George, UT 84790
Observer's e-mail address: **
Other observers who independently identified this bird: Bird was found on November 8th, 2018 by Rick Fridell and Seth Topham. Also observed by several others, including Steve & Cindy Sommerfeld, Maurice DeMille, Terry Reid, Paul Jaussi, and John Schijf.
Date prepared: 03/02/2019
Additional material: Photos
Additional comments: Note that this bird is quite clearly a different individual than the Tennessee warbler reported at this location one month earlier. The earlier bird appeared to be a hatch-year individual. See URBC 2018-52.
Interestingly, these two birds had both spent significant time foraging on the same willow tree.