American Goldfinch

The male Goldfinch returned to the feeder today. At a glance I knew it was the American Goldfinch. They are the only birds I have seen that have strong enough legs to hang upside down to feed.
He is in his Winter dress.
I expect the female is close by. The Goldfinch are almost always in small flocks. I shall get more thistle seed now that I know they are here for the winter.