. The bird, its form and function . tr ^^^^^^^^1 t i^^H ^^^^ li^l^ 149. -ruiMnal scrolls of dog. In :ihirtl tlusc lioiits are tar more siiniilc. 2o6 The Bird sense of smell most acutely developed, although in bothcases it is the delicate nerves of touch in the bill whichare most helpful in detecting the presence of the earth-worms which constitute the food of these birds. To whatever degree the nostrils of land birds aidtheir owners in procuring food, it is certain that those. Fig. —Head of Apteryx, showing tactile hair-like feathers, nostrils at tip of beak, and small eyes. species
. The bird, its form and function . tr ^^^^^^^^1 t i^^H ^^^^ li^l^ 149. -ruiMnal scrolls of dog. In :ihirtl tlusc lioiits are tar more siiniilc. 2o6 The Bird sense of smell most acutely developed, although in bothcases it is the delicate nerves of touch in the bill whichare most helpful in detecting the presence of the earth-worms which constitute the food of these birds. To whatever degree the nostrils of land birds aidtheir owners in procuring food, it is certain that those. Fig. —Head of Apteryx, showing tactile hair-like feathers, nostrils at tip of beak, and small eyes. species which feed entirely on fish, which they swallowwhole, have little use for nostrils, except for Nature, ever on the watch to economize, has re-duced these organs, in such birds as pelicans and cor-morants, and, at least in the adults, the nostrils are com-pletely filled up with bone and horn. The Senses 207 The Sense of Sight Birds, so wonderful and interesting in all their structureand life, have that most treasured of all the senses—sight—so highly developed that there is nothing withwhich we can compare it among living creatures. Withour great telescopes we can see to a greater distance thanany bird; with the high-power lenses of our microscopeswe can distinguish infinitely smaller objects than anyfeathered creature is capable of perceiving, but whereelse on the earth is there an organ of vision which in afraction of time can change itself from telesc
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Keywords: ., bookauthorbeebewil, bookcentury1900, bookdecade1900, bookyear1906
