Hi -
I have examined my photos from today (taken under challenging conditions) and
have a few comments on the bird:
1. The face pattern indicates it is a female. As far as I know no males have
been confirmed north of California (does anyone know of any).
2. It appears to be a full adult, with fully white belly.
3. It is in tail molt, with new outer tail feathers, and old, faded central
feathers.
4. Its left wing frequently droops. Clearly it flies well, but it may have some
sort of wing injury.
Wayne