Yellow-rumped Warbler

I think this is a Yellow-rumped Warbler that was entering its 1st winter. I say that because the lower half of the bird has the white and dark markings of an adult but has the light brown plumage on the head going down the back. Presumably it'll have adult plumage after its next molt.

By the time you get to the Rocky Mountains, Yellow-rumped Warblers have a different look since they've got a different subspecies of Yellow-rumped Warblers; more on those complications are here.

And this video has a few more factoids on our yellow-rumped friends.

October 16, 2022 at the Negri Nepote Native Grassland Preserve
Photo 250354374, (c) jpviolette, some rights reserved (CC BY-NC)


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