. A textbook in general zoology. Zoology. 294 BIRDS lay their eggs in other birds' nests, and allow the young to be fed and rearetl by foster par-ents. A kind of swift, found in the Polynesian Islands, builds its nests in caves, and constructs them of a mucous secretion which hardens into a tough gelatinous substance. These so-caUed "edible nests" are used as food by the Fig. 199. —Oriole'.s nest. Many birds secrete mucus from the salivary glands which is used to fasten the materials together of which their nests are built. The hanging nests of our Baltimore orioles (Fig. 1
. A textbook in general zoology. Zoology. 294 BIRDS lay their eggs in other birds' nests, and allow the young to be fed and rearetl by foster par-ents. A kind of swift, found in the Polynesian Islands, builds its nests in caves, and constructs them of a mucous secretion which hardens into a tough gelatinous substance. These so-caUed "edible nests" are used as food by the Fig. 199. —Oriole'.s nest. Many birds secrete mucus from the salivary glands which is used to fasten the materials together of which their nests are built. The hanging nests of our Baltimore orioles (Fig. 199) and of the japim of South America ai-e ol^jects of very great interest. The social weaver birds of South Africa build domelike structures out of straw beneath -which may be twenty or thirty individual nests. The female hornbill of Africa, Asia, and Australia enters a hollow tree to build. 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 Herrick, Glenn W. (Glenn Washington), 1870-1965. New York, Cincinnati [etc. ] American Book Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
