. British birds. Birds. W. p. PYCR AIT: NEST ()F THE RINGED PLOVER. 377 the more astute parents would leave progeny. Perhaps we should regard those individuals which make no j)retence at nest-building" as birds which have lost the earlier habit. The need for such preparation being apparently slight, the stimulus has lost its force. Where the nest-building habit still persists, we may imagine this stimulus to have been transmitted unimjjaired, because more strongly. >^J \'"-'4r5l^^ '"âV-''^'^ â ^'' Fig. 2.âNest of Ringed Plover: comi^osed of small pieces of stone. (Photographe
. British birds. Birds. W. p. PYCR AIT: NEST ()F THE RINGED PLOVER. 377 the more astute parents would leave progeny. Perhaps we should regard those individuals which make no j)retence at nest-building" as birds which have lost the earlier habit. The need for such preparation being apparently slight, the stimulus has lost its force. Where the nest-building habit still persists, we may imagine this stimulus to have been transmitted unimjjaired, because more strongly. >^J \'"-'4r5l^^ '"âV-''^'^ â ^'' Fig. 2.âNest of Ringed Plover: comi^osed of small pieces of stone. (Photographed by C. W. Colthrup. ) developed in their ancestors. But this, of course, is mere hypothesis. Admitting the possibility of this interjDretation we come to the second question.â-What induces the choice of materials ? That is to say, what induces some individuals to choose shingle, some shells, some wood-fragments, and others green vegetable matter? Do these birds act on suggestion? Having acquired the instinct to prepare a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Witherby & Co
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherl, booksubjectbirds
