Field Guide to North American Flycatchers: Empidonax and Pewees–A Field Guide Review
10,000 Birds
APRIL 4, 2023
.” They conclude that many non-vocalizing Empidonax flycatchers can be identified in the field, but only “when several field characters are used in combination–and after one has gained experience in looking at these characters on singing/calling and captive birds (i.e., known-identity).”**
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