A progression of agitation

Pine siskins (well, one goldfinch in the third picture) seem to have flock hierarchy issues either around the feeder or in the early spring.

I am getting better at getting clear shots of the flapping; it looks like it needs a faster shutter speed than 1/500, though. What it really needs is second sight, so I can focus where the agitated bird is going to be, but I understand that's much harder to learn than how to use the shutter priority mode on the camera.