Peterson Reference Guide to Seawatching: Eastern Waterbirds in Flight
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Numar articol:191119194
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Disponibilitate:Indisponibil
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Preț:194,00 Lei
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Anuntul a expirat la:22.12.2020, 15:51
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Specificatii
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. Though commonly called
seawatching, this on-the-fly observation and identification method
is by no means restricted to the coast. There are impressive
waterbird migrations on the Great Lakes, the Gulf of Mexico, and
many inland lakes and rivers. Nor is it restricted to migrating
waterfowl, as the principles of flight identification apply as
effectively to ducks flushed off a pond as to distant migrating
flocks. Like Hawks in Flight and The Shorebird Guide, the Peterson
Reference Guide to Seawatching breaks new ground, provides
cutting-edge techniques, and pushes the envelope in bird
identification even further.
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