I usually get a lot of blurry shots because they move quickly in dense foliage and I'm still such a wimpy photographer that I rely on the auto-focus of my dSLR camera.
Sometimes I'll get a decent focus, but the lighting is all wrong. So often, these cute little nuthatches are buried in the shadows. I did get a little catch-light in the eye on the next photo though.
Interesting Fact: Despite the broad geographic range of the Red-breasted Nuthatch, no subspecies are recognized in North America. (BNA)