DUCKS book

In addition to writing about wildlife, Weidensaul is an active field researcher whose work focuses on bird migration. Besides banding hawks each fall (something he's done for nearly 25 years), he directs a major effort to study the movements of northern saw-whet owls, one of the smallest and least-understood raptors in North America. He is also part of a continental effort to understand the rapid evolution, by several species of western hummingbirds, of a new migratory route and wintering range in the East.