This fall, our backyard has been invaded by a flock of these hungry little birds. They can empty the sunflower seed feeders about as fast as I can fill them. That's O.K. This is the first year I remember seeing them at least in such numbers. There are enough of them to attract a hawk who has come calling twice that we've noticed.
While trying to get a photo, I was looking at the LCD on the camera back to check exposure and one of these little characters landed on the camera strap, looked me over for a moment, and flew off.