Caleb, the lack of any rufous in the rectrices points away from a Selasphorus ID.
Scott, while this is certainly a bird I would've liked to see better photos of because of what appears to be a relatively short, straight bill for an Archilochus, this feature doesn't seem out-of-range for a Black-chinned Hummingbird, having personally observed some variation in BCHU bill structure. The primary feathers from what I can see also look classically BCHU to my eye; broad and curved, like a paddle as I like to think. Some may point to how grayish the crown appears here which is typically a useful mark for separating adult Black-chinned and Ruby-throated Hummingbirds, but not so among young birds as juvenile RTHU will also sport extensive crown feathers lacking the green iridescence found in adults. Ultimately, I think it's a Black-chinned but would feel safest leaving it at the "Archilochus" genus level.
Keep birding while following COVID recommendations and maintaining other aspects of your health!
Best,
David Tonnessen
Colorado Springs
On Thursday, August 13, 2020 at 8:19:01 PM UTC-6 caleb...@gmail.com wrote:
Hi Scott!I'm not very good with hummers, but this looks like a Broad-tailed youngster to me. Definitely curious to hear what CObirds has to say on this one, though!The birds are happy, and so am I~Caleb Alons, Larimer CountyOn Thursday, August 13, 2020 at 7:46:19 PM UTC-6 Scott Severs wrote:Any thoughts on the ID of this juvenile?Thank you,Scott SeversBoulder County--Scott E Severs Longmont ScottE...@gmail.com (Note the "E" in the address above) Sent from Gmail Mobile
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