Peterson Reference Guide to Seawatching: Eastern Waterbirds in Flight
Seawatching is the challenging act of identifying waterbirds in flight. Since more than one hundred different species can fly past an observation point, often at great speed or in tightly packed, mixed-species flocks, identification of these distant shapes can be a mystery. The keys to the mystery—the subtle traits that unlock the identity of flying waterbirds, be it wingbeat cadence, individual structure, flock shape and behavior, or subtle flashes of color—are revealed in this guide.
Author: Ken Behrens & Cameron Cox
Publisher: Houghton Mifflin Harcourt
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