Many thanks to Bruce Peterjohn for his very detailed explanation of how he
identified the hummingbird at Green Spring Gardens as a hatch year female
Rufous. (And thanks, too, to Larry Meade for posting it.) Every question I had
was answered completely. Fortunately, most bird identifications aren't quite
this challenging, but when they are, it's very instructive to learn from an
expert just how it is done.
Paula Sullivan
Alexandria