NANCY NEWFIELD is a hummingbird enthusiast and Master Bander who has banded more than 6,000 species of hummingbird. Newfield has written numerous articles for Bird Watcher's Digest, Birder's World and The Nature Society, among others. She has authored the book Hummingbird Gardens with Barbara Neilsen and the birding guide Louisiana's Hummingbirds for the Louisiana Department of Wildlife and Fisheries. She lives in Louisiana.