Re: [cobirds] subspecific ID of the Boulder Co. Fork-tailed Flycatcher

2018-10-27 Thread David Steingraeber
In addition to subspecies identification, the pronounced emargination/notching of the 3 outer primaries that Christian pointed out also provides confirmation that the bird is a male. According to both Pyle's /Identification Guide to North American Birds, Part 1 /and Howell's /Rare Birds of

[cobirds] subspecific ID of the Boulder Co. Fork-tailed Flycatcher

2018-10-26 Thread Christian Nunes
Hi all, When Fork-tailed Flycatchers show up in the US or Canada, birders often attempt to ascribe them to one of the two likely populations from which they might come: the widespread South American austral migrant, savana, or the resident monachus of Central America. This article summarizes