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huge extinct flightless birds: elephant birds Aepyorniformes , order Aepyorniformes
supplementary feather (usually small) on the underside of the base of the shaft of some feathers in some birds aftershaft
genus of birds of the family Meleagrididae including the ocellated turkey Agriocharis , genus Agriocharis
any of the membranous air-filled extensions of the lungs of birds air sac
large web-footed birds of the southern hemisphere having long narrow wings; noted for powerful gliding flight albatross , mollymawk
vascular fetal membrane that develops from the hindgut in embryonic higher vertebrates (reptiles, birds and mammals) allantois
red Asian weaverbirds often kept as cage birds amadavat , avadavat
thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) amnion , amnios , amniotic sac
higher vertebrates (reptiles, birds and mammals) possessing an amnion during development Amniota
swimming birds having heavy short-legged bodies and bills with a horny tip: swans; geese; ducks Anatidae , family Anatidae
chiefly web-footed swimming birds anseriform bird
any of various dull-colored South American birds that feeding on ants some following army ant swarms ant bird , antbird
ratite bird order: flightless ground birds having vestigial wings and long bills and small eyes: kiwis Apterygiformes , order Apterygiformes
wading and swimming and diving birds of either fresh or salt water aquatic bird
genus of large brown long-billed wading birds found in warm swampy regions of the western hemisphere: courlan; limpkin Aramus , genus Aramus
extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds archaeopteryx , Archaeopteryx lithographica , archeopteryx
primitive reptile-like fossil birds of the Jurassic or early Cretaceous Archaeornithes , subclass Archaeornithes
severe respiratory disease of birds that takes the form of an acute rapidly fatal pneumonia in young chickens and turkeys aspergillosis , brooder pneumonia
mold causing aspergillosis in birds and man Aspergillus fumigatus
United States ornithologist and artist (born in Haiti) noted for his paintings of birds of America (1785-1851) Audubon , John James Audubon
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