. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. 270 THE ANIMALS AND MAN seventy races of chickens now living, thirteen races of ducks, ten of geese and eight of turkeys. Of pigeons there must be nearly as many domestic races as there are of chickens. And yet all of them, with all their extraordinary variety of crests, and ruffs, and tails and plumage patterri, and all their various' special manners such as tumbling, dancing,. Fig. 14-4. Typical American Merino ewe, a highly specialized breed of sheep, with fine, close-set wool. (After Shaw.)
. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. 270 THE ANIMALS AND MAN seventy races of chickens now living, thirteen races of ducks, ten of geese and eight of turkeys. Of pigeons there must be nearly as many domestic races as there are of chickens. And yet all of them, with all their extraordinary variety of crests, and ruffs, and tails and plumage patterri, and all their various' special manners such as tumbling, dancing,. Fig. 14-4. Typical American Merino ewe, a highly specialized breed of sheep, with fine, close-set wool. (After Shaw.) and the like, are descended from a single wild species, the common rock dove, Columba livia, of Europe, Asia and North Africa (fig. 136). The domestic races of chickens are by some naturalists also held to be descended from a single wild species, the jungle fowl, Gallus bankivus, which ranges from Hindukoosh to the Chinese island of Hainau and through most of the Indonesian islands. But other naturalists believe that one or two other wild species of fowl are concerned in the an- cestry of our barnyard 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937; McCracken, Mary Isabel. New York, H. Holt and Company
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