. The bird, its form and function. Birds. Wings 347 spurs are not claws, but correspond in structure to the ordinary spurs on the legs of a rooster. The great heavy-headed and heavy-bodied hornbills fly with great effort, and it is said upon good authority that when passing low overhead they make a noise like a steam-engine. Although not strictly within the prov-. FlG. 278.—Spur-winged Goose. ince of this volume, mention should be made of the inten- tional use of the wings as instruments of sound,—to at- tract the females, as in our Ruffed Grouse and other birds. A little Bush Warbler of Afric
. The bird, its form and function. Birds. Wings 347 spurs are not claws, but correspond in structure to the ordinary spurs on the legs of a rooster. The great heavy-headed and heavy-bodied hornbills fly with great effort, and it is said upon good authority that when passing low overhead they make a noise like a steam-engine. Although not strictly within the prov-. FlG. 278.—Spur-winged Goose. ince of this volume, mention should be made of the inten- tional use of the wings as instruments of sound,—to at- tract the females, as in our Ruffed Grouse and other birds. A little Bush Warbler of Africa has indeed never been heard to utter a note, seeming to depend upon an occasional whirr of wings, in lieu even of the usual call-note or 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 Beebe, William, 1877-1962. New York, Holt
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1906
