A nice analysis by Dave Leatherman. I'd also point out that part of what gives Prairie Falcons a dark-armpitted look in flight, the contrastingly dark flanks, is also quite apparent while perched. This is demonstrated well by Dave's images; compare the even streaking/barring through the Gyrfalcon's underparts to the Prairie Falcon's denser-streaked flanks.
David Tonnessen -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/42601d36-386f-44f3-a4d0-ad9e26966046%40googlegroups.com.
