. Birds of the Colorado valley ... scientific and popular information concerning North American ornithology;. Birds. DIPPERS, OR WATER OUZELS 85 belong, for a parallel with which we must tura not only to the water-birds, but to the lowest representatives of the natatorial group, such as Loons, Grebes, Cormorants, and Penguins. In all the true water-birds, the feet are paddles, or oars, and as such fit instruments of progression. Those that dive but little or not at all use the feet exclusively in swimming; in others, that. travel below as well as upon the surface of the water, like those just
. Birds of the Colorado valley ... scientific and popular information concerning North American ornithology;. Birds. DIPPERS, OR WATER OUZELS 85 belong, for a parallel with which we must tura not only to the water-birds, but to the lowest representatives of the natatorial group, such as Loons, Grebes, Cormorants, and Penguins. In all the true water-birds, the feet are paddles, or oars, and as such fit instruments of progression. Those that dive but little or not at all use the feet exclusively in swimming; in others, that. travel below as well as upon the surface of the water, like those just named, the wings are also brought into requisition as efficient organs of locomotion. But in the Dippers, the feet retain a thoroughly iusessorial character, being no more fitted for swimming purposes than those of a Thrush or Sparrow; and when the birds make their aquatic excursiou3, they swim down, and stay below by means of their wings—in a word, they. 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 Coues, Elliott, 1842-1899. Washington, Govt. Print. Off.
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Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherw, booksubjectbirds
