For a couple of weeks I've been trying to get a decent picture of a male American Goldfinch - this is the best yet by quite a margin. Unfortunately these two males were hanging around in the now rather leafy tree near the bird feeder and showing no interest in coming out into the open to be photographed.
It turns out that they were waiting for a woman to feed them. Eventually a female visited the feeder, took some food, chased one of the males off and fed the seed she'd picked up to the other one. I've no idea if this is well-known Goldfinch behaviour - if not, you read it here first!