Birding Site Guide
BIRDS OF THE WORLD, International Ornithological Congress Recommended English Names (Gill, F. and M.Wright. 2007)
A downloadable 3 Excel page list of all the birds of the world. Very closely follows Handbook of the Birds of the World and therefore the latest Clements list as well.
LIST OF THE BIRDS OF THE WORLD (IOC 2007)
Gill, F. and M.Wright. 2007. Birds of the World: Recommended English Names. Princeton NJ: Princeton University Press