. The bird, its form and function. Birds. 392 The Bird are doubtless of consideralDle use when the bird is emerg- ing from the water, which it generally does with a sudden spurt of speed and a strong leap which lands it on its feet. In landbirds which have either lost or are losing the power of flight there is often an interesting correlation to be observed between the lapsing of this mode of loco-. FiG. 307.—Feet of Penguin. motion and an increased use and consequent greater de- velopment of the legs and feet. Of a South African bird, about the size of our American Robin, known as the Rock- j
. The bird, its form and function. Birds. 392 The Bird are doubtless of consideralDle use when the bird is emerg- ing from the water, which it generally does with a sudden spurt of speed and a strong leap which lands it on its feet. In landbirds which have either lost or are losing the power of flight there is often an interesting correlation to be observed between the lapsing of this mode of loco-. FiG. 307.—Feet of Penguin. motion and an increased use and consequent greater de- velopment of the legs and feet. Of a South African bird, about the size of our American Robin, known as the Rock- jumper, it is said: "These curious birds are only to be found on the rock-strewn slopes and summits of mountain- ranges where they are able to hop from rock to rock for 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 Beebe, William, 1877-1962. New York, Holt
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1906
