Verification of Unusual
Rec. # 15-2001
|Scientific name:||Dendroica discolor|
|Date:||Sept. 28, 2001|
|Time:||4:30 - 4:45 P.M.|
|Length of time observed:||Two times; about 10 - 15 seconds each|
|Age:||Juv / Imm, winter plumage|
|Sex:||Female or immature|
|Location:||Harrisburg resort in Washington Co., Ut. on Quail Creek, dry cove where the resort owners tether their boats.|
|Distance to bird:||Approx. 7-10 yards|
|Optical equipment:||8 x 40 Zeiss Binocs|
|Weather:||Clear, has been hot & dry for almost all of Sept.|
|Detailed description of bird:||
Size: Warbler-sized, approximately 5 inches long. Slightly larger than
Lucy's Warbler & about same size as yellow warbler, both of which were
feeding in the same trees & bushes.
This particular individual most closely resembles the picture of the immature Prairie Warbler on page 367 of the NGS Field Guide to The Birds of North America, 2nd E. except the streaking on the flanks was more black & distinct.
Field guides describe, tail-bobbing, & white in tail. Didn't observe these features on this bird.
Variations form expected field marks. None
|Song or call & method of delivery:||None heard|
The bird I observed was actively foraging in small tree & thick
Other birds: Orange-crowned, yellow, yellow-rumped, Lucy's & chestnut-sided Warblers plus white-crowned Sparrows (immature).
Riparian - desert scrub.
willow, cottonwood, rabbit brush
how were they eliminated:
Palm Warbler - Fall birds lack yellow breast, also have
an eyebrow. Usually wag or bob tail.
Graces' Warbler - Yellow throat, white belly, darker on back; immature lacks light-colored area around eye.
Nashville warbler - Yellow underneath not as bright a yellow plus it lacks black streaking on flanks. Has a small distinct white eye ring which prairie lacks.
Magnolia Warbler - Immature has distinct wingbars, olive-colored back, pale yellow under parts (or even grayish) & indistinct black streaking on flanks.
|Previous experience with this & similar species:||First time with this particular species; many observations of similar warbler species described above except chestnut-sided & magnolia.|
|References consulted:||NGS field guide, 2nd Ed. [and several others of the main field guides - verbally reported]|
|Description from:||Notes made later from memory|
|Observer's address:||1063 East 400 North, Orem, UT 84097 Phone: (801) 224-6113|
|Observer's e-mail address:|
observers who independently identified
|Date prepared:||Oct. 1, 2001|
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