Some uncooperative birds are so spectacular that it's still worth sharing the crappy pictures I managed to get.
The feeder where the blue grosbeak in the top pictures was hanging out was on the far side of a fenced area, so even though I had an unobstructed view, it was too far away for even a 500mm lens to see clearly.
The other blue bird is an indigo bunting, and it was so far up in the trees that without binoculars or an enormous lens it was only a dark blue dot.
I'd never seen either of these species before. And those are some beautiful birds.