43-B-2018 Black-throated Gray Warbler
Plumage: First noticed striking black and white coloration with distinct black flank streaking on bright white underparts. Facial pattern distinctive – black triangular throat including chin, black auricular patch in bright white face, and black crown. Upperparts grey; underparts bright white. White wing bars and white tail spots apparent.
Bill / Feet / Eye Color: Narrow blackish bill; black legs; dark eye.
Adult male Blackpoll Warbler (S. striata) eliminated by black auricular (cheek) patch. Other “black-throated” warblers eliminated by lack of any yellow coloration on this bird.
Black-and-white Warbler (Mniotilta varia) eliminated by this bird’s relatively bi-colored general appearance (grey above and white below) rather than fairly uniformly streaked black and white. In addition, this bird had classic Setophaga structure (rather stocky, long tailed) and behavior (relatively calm, horizontal posture as it moved through external braches) versus the slim, short tailed Black-and-white which also tends to “creep” near the trunk of trees.
FIRST ROUND VOTING:
Description supports identification of Black-throated Gray Warbler.
well described and similar warblers eliminated
Observer field notes definitively describe Black-throated Gray Warbler and rule out the two most similar adult-plumaged species, both of which are about as rare in this particular sub-region of Idaho. Absence of Black-and-White Warbler's nuthatch-like behavior is telling in affirming the identity. Adult male Blackpoll at this late date is not impossible but much more likely a representative of that species would be a straggling hatch year, which is yet more distinctly unlike Black-throated Gray.
This fine bird report nicely eliminated other similar warbler species and I'm convinced.
Description eliminates similar species and accurately describes Black-throated Gray Warbler.
Great description of a distinctive bird, plus careful elimination of the superficially-similar warblers.
Convincing description - only minor complaint is the lack of mention of the yellow supraloral spot but all other field marks match up.