. Zoology for high schools and colleges. Zoology. GALLINACEOUS BIRDS. 547 rubbish, forming a hot-bed, in which its eggs are left to hatch. The raegapods, together with the American guans and curassows {CracidcB), form a sort of passage from the gallinaceous to the columbine birds. One of the most puz- zling forms for the systematic ornithologist to deal with is the hoasin of Guiana {Opisthocomus cristatus Illiger). In this bird the keel of the breast-bone is cut away in front, the wish-bone unites with the coracoid bones, and also with the manubrium of the breast-bone, thing of rare occurrence
. Zoology for high schools and colleges. Zoology. GALLINACEOUS BIRDS. 547 rubbish, forming a hot-bed, in which its eggs are left to hatch. The raegapods, together with the American guans and curassows {CracidcB), form a sort of passage from the gallinaceous to the columbine birds. One of the most puz- zling forms for the systematic ornithologist to deal with is the hoasin of Guiana {Opisthocomus cristatus Illiger). In this bird the keel of the breast-bone is cut away in front, the wish-bone unites with the coracoid bones, and also with the manubrium of the breast-bone, thing of rare occurrence (Ooues). In the tinamous of Central and South America the tail-feathers are, in some cases, entirely wanting, and the breast- bone and skull-bones have some anom- alous features. Most all gallinaceous birds hare plump bodies, with short beaks and small rounded wings, not being good fliers. In some of their cranial characters they are so peculiar that Huxley makes them one of his primary divisions of CarinatcB. We now come to birds of a higher type, in which the knee and part of the thigh are free from the body, the leg being usually feathered down to the tibio-tarsal joint; the toes are usually on the same level, being fitted for grasping or perching. The doves are rapid fliers, but a notable exception is seen in their extinct ally the Dodo {Didus ineptus Linn.) of Mauritius, which became extinct on the island of Mauritius in the seventeenth century, while the solitaire, Didus {Pe-. Pig. 472.—White-tailed Ptarmigan (Lagopus leucunin), in (upper figure) summer and (lower figure) winter pUimage.—From Hayden'B 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York, H. Holt and Company
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
