Verification of Unusual Sight Record
For Utah

Rec. # 2019-28

Common name:

White-eyed Vireo

Scientific name: Vireo griseus
Date: 9-10-2019
Time: 8:45 am
Length of time observed: ~20 seconds
Number: 1


Sex: Unknown
Location: North Arm Natural Area, Eden, Utah
County: Weber
Distance to bird: 35-45
Optical equipment: Pentax 10x50 DCF SP Binoculars
Weather: Partly cloudy
Light Conditions: Great. Sun had just came out and was at my back.
Description:        Size of bird: 4-5
(Description:)       Basic Shape: Warbler-like.
(Description:)  Overall Pattern: Yellowish & Gray/Green
(Description:)            Bill Type: Vireo.
Field Marks and
Identifying Characteristics:
First observed the bird foraging low in a stand of young willows. The first field mark I noticed was the wing bars on dark grayish wings with yellow underside that was absent of any streaking. The bird then flew ~6 away and landed facing away which allowed me to observe the yellow undertail. After another short flight of around 6-8 it sat up and turned itself to the left which was my first look at the bright yellow spectacles set on a gray head with much lighter throat. During my brief looks I didn t notice a pale iris or what color the iris even was. It then flew into a thicker group of dense trees and I was unable to find the bird afterwards despite other attempts later in the day. Looks were brief, but diagnostic.
Song or call & method of delivery: None given while I was observing the bird and once I started listening for the calls and/or song.
Behavior: Actively moving through willows just above the grass line. Not as flitty as a Ruby-crowned Kinglet would be, but more active than a Sparrow.
Habitat: Young, thick stand of willow saplings surrounded by much taller, more mature willow-type trees and shrubs.
Similar species and how
were they eliminated:
Kentucky Warbler- doesn t have wing bars. Blue-winged Warbler - dark eye-line. Grace s Warbler- White under tail. Thick-billed Vireo, Yellow-throated Vireo, Cassin s Vireo- doesn t have yellow under tail. Other vireos either don t have spectacles or they re not bright yellow. Empids don t have spectacles . Tanagers too large.
Previous experience with
this & similar species:
Have seen this species multiple times in Illinois, Louisiana, and Texas
References consulted: Memory, Sibley app, Warbler Guide. (More for eliminating other possibilities than to ID)
Description from: From memory
Observer: Mike Hearell
Observer's address: North Ogden, UT
Observer's e-mail address: **
Other observers who independently identified this bird: I notified others of my sighting, but as of the writing of this report, I m the only one that observed the bird.
Date prepared: 9-10-2019
Additional material:  
Additional comments: