ID Quiz - April 30, 2020

It's a Yellow Warbler!

OK, so it's yellow and has a warbler bill, but so do other species. So, how do we know it's a Yellow Warbler (and not just a "small-y small-w" yellow warbler)? The combination of yellow underside, undertail coverts and undertail is diagnostic for that species. Also note the plain yellow face and the reddish streaking on the front (which is not always present).

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