What's an "ahy RT" anyway!?????standard said:how can an amateur distinguish RT juvies from ahy RT females in the field? I've heard some folks say that it can only be determined with the bird in hand, and others say that experts can tell visually.
thanks
. . . Even I knew the 'Ruby-throated' part!!!Curtis Croulet said:ahy = after hatch-year
RT = Ruby-throated
Frankj said:. . . Even I knew the 'Ruby-throated' part!!!
humminbird said:but gender determination at a banding station is based not only on character observations (color patterns, feather shapes, etc.) but also on measurements determining if they fall in the norm for that species.
Gorget color is actually used very little at the banding stations from my observations.
standard said:very interesting that banders cannot always ID the species of a juvie.