Robert S. Ridgely, a leading ornithologist and author of A Guide to the Birds of Panama and The Birds of Ecuador, is Deputy Director of World Land Trust-US. He has served on numerous conservation-related boards, and currently is especially involved with FundaciÓn Jocotoco in Ecuador, of which he is president. Guy Tudor, a MacArthur Fellow and well-known bird artist and naturalist, was the principal illustrator of A Guide to the Birds of Venezuela and A Guide to the Birds of Colombia.