. A first book of zoology [microform]. Zoology; Zoologie. !| THE COMMON PIGEON _^^ 131 charartenstic sounds-thr "oooinK" of pigeons or .loves to one another is the counterpart of the son^ of a or The special orKan for producing sound in ,8 known as the syrinx, a structure located at the base of the the passage which conducts air from the mouth-cavity to the lungs. The pigeon has a beak adapted for picking and eating see<ls-which are stored up m a part of the alimentary canal known as he crop. It is easy to distinguish this chamber just above the
. A first book of zoology [microform]. Zoology; Zoologie. !| THE COMMON PIGEON _^^ 131 charartenstic sounds-thr "oooinK" of pigeons or .loves to one another is the counterpart of the son^ of a or The special orKan for producing sound in ,8 known as the syrinx, a structure located at the base of the the passage which conducts air from the mouth-cavity to the lungs. The pigeon has a beak adapted for picking and eating see<ls-which are stored up m a part of the alimentary canal known as he crop. It is easy to distinguish this chamber just above the breast of a well-fed pigeon or fowl, since the seeds of gram may be actually felt through the skin. Another feature of the pigeon not yet met with in the preceding animals is the possession of warm blood. Th keen sight of a pigeon doubtless com- pensates for its feeble sense of smell, a faculty poorly developed in birds. The female pigeon lays a pair of perfectly white epfgs in a rough nest of feathers, etc. Unlike reptiles, birds do not leave their eggs to be hatched by the sun, but brood over cover the eggs with the body and tJius keep them at a temperature of about 38-40' C (100' K)., A pigeon broods for fourteen days. At the end of the period of incubation the young pigeons break through the shell and hatch as nestlings covered with a fine down Ihe parents feed them at first on "pigeon's milk"_a white fluid secreted from the crop. The nestlings of birds such as p,geons. which are helpless on hatching, usually blmd and almost featherless, are called altrices. Vaneties of description which has been given applies in the main to all pigeons, but the coloura-. Fig. of P.^eon ( x 1).. 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 Burlend, T. H; Cornish, George
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1915
