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Yellowlegs and Sandpiper, illustration from Elon Howard Eaton, "Birds of New York"
Wyoming Bird, diatryma, skeleton, illustration from the American Museum Journal
Wyoming Bird, diatryma, restoration, illustration from the American Museum Journal
Wrens and Creeper, illustration from Elon Howard, "Birds of New York"
Woodcock bill open, shut, illustration from William Beebe, "The Birds Its Form and Function"
Woodcock attenuated outer wing fracture from William Beebe, "The Bird Its Form and Function"
Wing skeleton compared with arm from William Beebe, "The Bird Its Form and Function"
Wings, illustration from Frederick Webb Headley, "The Flight of Birds"
Wings, illustration from Frederick Webb Headley, "The Flight of Birds"
Wings, Albatross and Hummingbird from William Beebe, "The Bird Its Form and Function"
Wing, primaries and secondaries, illustration from William Pane Pycraft, "History of Birds"
Wing of Long-eared Owl, showing flight patterns, illustration from William Pane Pycraft, "History of Birds"
Wing of bird, muscles of, from R.W. Shufeldt, "Myology of the Raven"
Wing feathers, illustration from Frank E. Beddard, "The Structure and Classification of Birds"
Wing compared with human arm
Wing bones, four methods of making, from Frederic A. Lucas, "Animals of the Past"
White-throated Sparrow, effect of moisture in darkening plumage, illustration from William Beebe, "The Birds Its Form and Functi
White Pelican, illustration from "Birds of the World"
Whitebreasted Nuthatch, Brown Creeper, illustration
Water Turkey, image from Frank M. Chapman, "Camps and Cruises of an Ornithologist"