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A Field Guide to Hawks of North America (Peterson Field Guides)

Clark, William S.; Wheeler, Brian K.

 
9780395670675: A Field Guide to Hawks of North America (Peterson Field Guides)
ISBN 10: 0395670675 ISBN 13: 9780395670675
Verlag: Houghton Mifflin Harcourt, 2001

Inhaltsangabe

This guide includes all 39 species of North American hawks and other diurnal raptors, including eagles, falcons, and vultures. Color paintings and photographs show each species in various color morphs and plumages, which are aso described in detail.

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Über die Autorin bzw. den Autor

ROGER TORY PETERSON, one of the world’s greatest naturalists, received every major award for ornithology, natural science, and conservation as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars.

Auszug. © Genehmigter Nachdruck. Alle Rechte vorbehalten.

NORTHERN GOSHAWK Pl. 13
Accipiter gentilis

Description
The Northern Goshawk, our largest accipiter, is a breeding resident
in northern and western mountain forests. Wings are long for an
accipiter, rather buteo-like. Tip of folded tail is wedge-shaped.
Sexes are almost alike in plumage, with females separably larger than
males. Juvenile plumage is different from that of adults. Cere is
greenish yellow to yellow. Legs are yellow. On perched birds,
wingtips extend halfway to tail tip. Widespread race atricapillus is
described below.

ADULT: Head is black except for wide white superciliary lines and
whitish throat. Eye color varies from orange to red to mahogany,
darkening with age. Back and upperwing coverts are blue-gray and
average darker on females; they contrast with blackish uppersides of
flight feathers. Underwing coverts and underparts are pale blue-gray
with fine black vermiculations and some vertical black streaking.
Females usually have coarser, darker barring and more vertical black
streaking. Primaries show dusky banding on undersides; secondaries
show, at most, faint banding. Tail is blue-gray, with three or four
incomplete blackish bands. Undertail coverts are white and fluffy.

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Verlag
Houghton Mifflin Harcourt
Erscheinungsdatum
2001
Sprache
Englisch
ISBN 10 
0395670675
ISBN 13 
9780395670675
Einband
Kunststoffeinband
Zeichner
Wheeler Brian K.
Auflage
2
Anzahl der Seiten
336
Herausgeber
Peterson Roger Tory
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