Western flycatcher
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The western flycatcher has been split into two species, which are hard to distinguish, and to tell apart from other Empidonax flycatchers.
DNA testing in 2014 confirmed a new field mark, involving the extent of buffy edging on the secondaries, to reliably distinguish these species from the yellow-bellied flycatchers.[1][2]
Birds known as western flycatcher include the Pacific-slope flycatcher (Empidonax difficilis) and the Cordilleran flycatcher (Empidonax occidentalis).
References
- ^ Engel, Joshua (26 November 2014). "A first for Illinois, discovered in The Field Museum's collection". Field Museum of Natural History. Retrieved 19 February 2022.
- ^ Engel, Joshua (2 December 2014). "Follow up: A first for Illinois, discovered in the Field Museum's collection". Field Museum of Natural History. Retrieved 19 February 2022.
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