Pine Siskin (Spinus pinus) — fluffed up against the cold (~35°F) early this morning.
A large flock of siskins was feeding in a sweetgum tree in our yard. Their activity level seemed to attract other birds. The siskins were joined by Lesser Goldfinches, Cedar Waxwings, a Red-breasted Nuthatch (see below), and Chestnut-backed Chickadees.
It's already 36°F here tonight (at ~10 p.m. in Cotati), and it's predicted to reach 30°F by morning. Brrrr!