Verification of Unusual Sight Record
For Utah

Rec. # 2022-43

Common name:

Philadelphia Vireo

Scientific name: [Vireo philadelphicus]
Date: 9/25/2022
Time: Approx. 10:00
Length of time observed: 2 minutes
Number: 1
Location: Willard Bay State Park
County: Box Elder County
Distance to bird: 20-50 ft
Optical equipment:  
Weather: Clear
Light Conditions: Sunny
Description:        Size of bird: 5"
(Description:)       Basic Shape: Passerine; vireo
(Description:)  Overall Pattern: Bright yellow on throat and undertail, dull yellow wash underneath, white eye arcs, grayish back
(Description:)            Bill Type: Hooked vireo bill
Field Marks and
Identifying Characteristics:
A vireo with yellow coloration (outside of the wings and face) brightest at the throat and undertail, strong dark lores, and bold white eye arcs.
(see photos)
Song or call & method of delivery: None
Behavior: Foraging
Habitat: Riparian
Similar species and how
were they eliminated:
Shape, coloration, and plumage pattern narrows this bird down to WAVI or PHVI. WAVI would show duller lores, less defined white eye arcs, and plain underparts and throat.
Previous experience with this & similar species: Extensive experience with WAVI, none with PHVI.
Previous experience with
this & similar species:
References consulted:  
Description from: Notes taken at time of sighting; photos
Observer: Quinn Diaz
Observer's address:  
Observer's e-mail address: **
Other observers who independently identified this bird:  
Date prepared: 9/25/2022
Additional material: Photos
Additional comments: