Vireos, Vireos, Vireos!
Connecticut has recently been experiencing an influx of vireos as the fall migration for song birds reaches flood stage. With approaching cold fronts, one is never sure of what will show. Below is a nice study in one of the not-so-easy identification puzzles one may run into in the field. The first three images below are by my friend John Schwarz at www.birdspix.com who enjoyed this PHILADELPHIA VIREO at Bluff Point in Groton. The same day, I captured some images of the similar bird at my patch in Ivoryton, in different light that might lead one to believe this to be a WARBLING VIREO. Consensus is that it is a Philadelphia. Lighting in the field as well as in camera images can be a real issue. Just because you got a good image doesn't mean the challenge ends! There is an excellent discussion of fall Warbling Vireo vs. Philadelphia Vireo at this LINK. Scroll down to photo #8. Think image #8 is a Warbling? Enjoy the challenge!  AG