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Flycatcher help please

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Hi,

Flycatchers:classic_dry: I have birding a long time and they still all look so much alike to me. I'm hoping for some help on this one taken 9-15-18 in NE Colorado. Thank in advance!

https://imgur.com/a/4Pe5csJ

Edited by Clip

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16 minutes ago, psweet said:

Looks like one of the Empidonax flycatchers -- they all do look alike!

Does this mean you can't help? I do have other photos at different angels.

 

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Well, very gray tone appears to rule out Cordilleran (and Yellow-bellied). The mostly dark lower mandible doesn't fit Traill's. The short primaries aren't really right for Hammond's (or Acadian). The wingbars and tertial edges seem rather dull, although they don't appear very worn -- that would seem to rule out Least. And there's too much dark on the bill for Gray, which leaves us with a tentative (always with silent Empids, often even in hand) Dusky.

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The very long tail (assisted by the short primary projection) rules out all but Dusky and Gray.  The bill pattern rules out Gray, leaving Dusky, which is - far and away - the most-common Empidonax on Colorado's plains in fall after early August.

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