. The bird, its form and function. Birds. 41 o The Bird Reserving the mention of partly ornamental tails until the last, we may now consider the use of this member as a prop or support to the bird as it clings to or makes its way up vertical surfaces. Four groups of birds which are thus distinguished are the woodhewers—a tropical. Fig. 326.—Chimney Swift clinging to wall, resting upon tail. family,—the creepers, woodpeckers, and swifts. These birds really sit upon their tails, the feathers of which are adapted for this special use, while retaining perfectly the rudder function in flight. The t
. The bird, its form and function. Birds. 41 o The Bird Reserving the mention of partly ornamental tails until the last, we may now consider the use of this member as a prop or support to the bird as it clings to or makes its way up vertical surfaces. Four groups of birds which are thus distinguished are the woodhewers—a tropical. Fig. 326.—Chimney Swift clinging to wall, resting upon tail. family,—the creepers, woodpeckers, and swifts. These birds really sit upon their tails, the feathers of which are adapted for this special use, while retaining perfectly the rudder function in flight. The tail-feathers of the Chim- ney Swift are peculiar in having the ends, for a short dis-. 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
