. The bird, its form and function. Birds. 372 The Bird or a nut, and, holding it in the foot while eating, turn it from side to side as we revolve an apple in our hand. With their claws they preen their plumage, and push each other aside when too closely crowded. In fact the functions of the feet and toes of parrots approach nearer to those of a human hand than the limb of any other Order of birds.. Fig. 292.—Foot of Cuckoo, perching, and with toes outstretched. Cuckoos are perching birds, and when we see the skil- ful way in which they creep through a dense thicket, never missing their hold,

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The Book Worm / Alamy Stock Photo
Image ID: RE49KF
. The bird, its form and function. Birds. 372 The Bird or a nut, and, holding it in the foot while eating, turn it from side to side as we revolve an apple in our hand. With their claws they preen their plumage, and push each other aside when too closely crowded. In fact the functions of the feet and toes of parrots approach nearer to those of a human hand than the limb of any other Order of birds.. Fig. 292.—Foot of Cuckoo, perching, and with toes outstretched. Cuckoos are perching birds, and when we see the skil- ful way in which they creep through a dense thicket, never missing their hold, we wonder why all perching birds do not have this arrangement of two toes in front and two behind. So completely are our theories set at naught that we should hardly be surprised to see a bird with one toe in front and three behind cheerfully hopping from branch to branch! In the deserts of the south-. 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 work.. Beebe, William, 1877-1962. New York, Holt