They’re like flycatchers,
birds so similar I have to hear* them in order to ID them.
Unlike the boys. When THEY phone
I need to read the Caller ID to help me distinguish who’s on the other end.
as in which bird would be in this place & when.
Helps with the boys too: I know who lives where.
And, I do so know them from the front.
*”…the dozen or so confusing flycatchers in the Empidonax group…look so similar they’re sometimes impossible to identify even in the hands of a bird bander with a precise set of measurement calipers. But all that uncertainty vanishes as soon as they open their mouths.” (from http://www.allaboutbirds.org/page.aspx?pid=1059)