The black-capped chickadees are the most acquiescent subjects when it comes to close-up pictures, so I've been focusing on them for the most part. I've had some good success although I still have difficulty with camera shake, and I also sometimes have trouble with focusing on the wrong thing (like the feeder, rather than the bird on the branch behind it). I'm mostly still using the automatic settings on the camera as I learn more about it.
I like this image that captured the sort of "squat" that the bird takes to peer in at the seeds. Notice how this particular bird has a slight buff tint on the sides of its chest/belly area.
This bird, by contrast, doesn't have that buff colour showing at all. I'm not sure if that's because it's a juvenile or just natural variation.
This shot isn't perfectly clear, but I love the fact that it captures that initial moment of take-off.
I'm having a bit more difficulty with the red-breasted nuthatch. Needs work!