Red-breasted Nuthatches

I like these cute little birds. Although they do come to the feeder, just as often they are on the trees, usually upside down, and never sitting still for long. Lately I've been trying to get photos of them but it's been a frustrating process. I see them through the window, grab my camera, and get outside just in time to see them disappear. I wait around for a few minutes but there's no sign of them. So I go back inside, look out the window and they're back! I did catch a few shots but they're not the greatest since they are handheld at effectively 750mm. I should have the tripod but somehow I don't think they'd stick around for that!