. The bird, its form and function. Birds. The Framework of the Bird 83 and all but motionless. It is said that, comparatively, the muscular energy is greater and the wing-bones more powerful in a hummingbird than in any other animal. Nature has a puzzling way of achieving similar results in a very similar manner in creatures wholly unrelated. We have a good example of this in bats and birds, both. Fig. 59.— of the size of the keel of the Albatross, Pigeon, and Humming- bird, supposing all to have an equal spread of \ying. (Courtesy of Dr. F. A. Lucas.) of which have independently le
. The bird, its form and function. Birds. The Framework of the Bird 83 and all but motionless. It is said that, comparatively, the muscular energy is greater and the wing-bones more powerful in a hummingbird than in any other animal. Nature has a puzzling way of achieving similar results in a very similar manner in creatures wholly unrelated. We have a good example of this in bats and birds, both. Fig. 59.— of the size of the keel of the Albatross, Pigeon, and Humming- bird, supposing all to have an equal spread of \ying. (Courtesy of Dr. F. A. Lucas.) of which have independently learned to propel them- selves through the air by means of their front limbs. If we take the breast-bone of a common bat and that of a small bird and place them together, few^ persons unacquainted with the bones of the two types could tell which was that of the bat,—different as that little crea-. 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
