JOHN KRICHER is Professor Emeritus of Biology at Wheaton College, Norton, MA, where for 48 years he taught ecology, ornithology, and vertebrate evolution. He is a Fellow in the American Ornithologists Union and is past president of the Association of Field Ornithologists, the Wilson Ornithological Society, and the Nuttall Ornithological Club. He has served on the board of the American Birding Association.