File:Bird behaviour psychical and physiological (1919) (14569033970).jpg

Identifier: birdbehaviourpsy00finn (find matches)
Title: Bird behaviour psychical and physiological
Year: 1919 (1910s)
Authors: Finn, Frank, 1868-1932
Subjects: Birds
Publisher: New York, Dodd, Mead
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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orthernSouth America. The adult bird is not unlike aperching Pheasant in general form, size, and habits,but the young are most curious creatures, clad atfirst in a scanty down like that of a young Pigeon,but nevertheless born open-eyed, not blind as Pigeonsand other naked or nearly naked nestlings are; theyare also able to clamber about the boughs, in whichaction not only the bill and feet are brought intoplay, but also the wings, which have claws at theend of the first and second digits, the first digit inbirds being that little movable point whichsupports the set of pigmy quills known as thebastard-wing, which may be seen projecting at thepinion-joint of a Pigeons wing when it is about tosettle, and the second forming the tip of thepinion. These claws of course represent two of the threeoriginal claws found in the separate digits of theprimaeval birds forelimb (which were probablysimply enclosed in a common skin like a Kingfisherstoes), and so it is interesting to find them still in
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YOUNG HOATZIN.A half-fledged specimen, showing its method of climbing with bill. wing., and feet.132

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