I've been photographing from a blind for the past couple days, trying to improve my coverage of a few species as well as adding some new ones to my collection. It's been extremely dry here this winter, so the birds are easily attracted to water fountains/drips.
This has been a good opportunity to put the 50D body through the paces, using it with the 500/4IS and a 1.4x teleconvertor. I've shot thousands of photos, but the keeper ratio for this kind of shooting is painfully low. Here are a few I managed to process so far....
Wild Turkey head

Northern Cardinal
Lincoln's Sparrow