I just came across this online book: http://www.digitalbirdphotography.co.../contents.html It is the most complete, in-depth resource I've ever seen to digital bird photography. It is over 900 pages long, and using it is free! I think anyone at any level will find it fascinating. The author WH Majoros, is a scientist and he's also written many other publications about biology and birds. He looks like a pretty cool guy.

