Behrens, Ken.

Summary: 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,...

Format: text

Publisher / Publication Date: Houghton Mifflin Harcourt 2013

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