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The, Auk, Washington, D.C, American, Ornithologists', Union, 1884, birds, periodicals, ptarmigan, quail, feather, The illustration features two detailed representations of down feathers. The first figure, labeled as ''Down Feather of Ptarmigan, ' showcases the delicate structure and fine barbs of the feather, emphasizing its lightness and insulation properties. The second figure, titled ''Down Feather of Quail, ' presents a similar feather with distinctive characteristics, highlighting differences in texture and form. Both figures serve to illustrate the intricate designs found in avian feathers, emphasizing their role in temperature regulation and their unique adaptations in different bird species.

The, Auk, Washington, D.C, American, Ornithologists', Union, 1884, birds, periodicals, ptarmigan, quail, feather, The illustration features two detailed representations of down feathers. The first figure, labeled as ''Down Feather of Ptarmigan, ' showcases the delicate structure and fine barbs of the feather, emphasizing its lightness and insulation properties. The second figure, titled ''Down Feather of Quail, ' presents a similar feather with distinctive characteristics, highlighting differences in texture and form. Both figures serve to illustrate the intricate designs found in avian feathers, emphasizing their role in temperature regulation and their unique adaptations in different bird species.
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The, Auk, Washington, D.C, American, Ornithologists', Union, 1884, birds, periodicals, ptarmigan, quail, feather, The illustration features two detailed representations of down feathers. The first figure, labeled as ''Down Feather of Ptarmigan, ' showcases the delicate structure and fine barbs of the feather, emphasizing its lightness and insulation properties. The second figure, titled ''Down Feather of Quail, ' presents a similar feather with distinctive characteristics, highlighting differences in texture and form. Both figures serve to illustrate the intricate designs found in avian feathers, emphasizing their role in temperature regulation and their unique adaptations in different bird species.
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Album / quintlox
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Modèle: Non - Propriété: Non
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Taille de l'image:
2250 x 3837 px | 24.7 MB
Taille d'impression:
19.1 x 32.5 cm | 7.5 x 12.8 in (300 dpi)
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