Sighting Record for Utah

Common name:	Philadelphia Vireo
Scientific name:	Vireo philadelphicus
Date:	Aug 30, 2016
Time:	11:40 AM
Length of time observed:	10 mins
Number:	1
Age:
Sex:
Location:	Utah Lake North Shore
County:	Utah
Latilong:
Elevation:	4,200'
Distance to bird:	70-100'
Optical equipment:	8x42 binoculars and 500mm lens
Weather:	Sunny and clear
Light Conditions:	Good light
Description: Size of bird:	small
(Description:) Basic Shape:	passerine
(Description:) Overall Pattern:	gray and yellow
(Description:) Bill Type:	semi-thick--not dagger like
(Description:) Field Marks and Identifying Characteristics:	I spotted a vireo moving in the trees, and when it flew I could see a lot of yellow on the undersides. I actually was thinking it would end up being a bright Cassin's or a BHVI. However, when it landed and I saw it, I could see it was more compact, and not a solitary spuh. The bird had a dark lore with obvious white eye-line, and under-eye arc. Yellow throat, and undersides were easy to see even from 70' below. \ (see photos)
Song or call & method of delivery:	none
Behavior:	Feeding in the tree tops and moving with a flock of warblers, and chickadees harassing a Cooper's Hawk. I never actually saw the vireo go after the hawk though.
Habitat:	Deciduous. Migrant Trap surrounded by farm on the north, and Utah Lake and on the south.
Similar species and how were they eliminated:	Warbling Vireo lacks dark lores, and extensive yellow underneath.
Previous experience with this & similar species:	See 100's of WAVI annually, and have seen PHVI numerous times in the midwest and once in Utah.
References consulted:	none
Description from:	From memory
Observer:	Tim Avery
Observer's address:
Observer's e-mail address:	**
Other observers who independently identified this bird:
Date prepared:	Aug 30, 2016
Additional material:	http://ebird.org/ebird/view/checklist/S31330640
Additional comments: