. The bird, its form and function. Birds. 5° The Bird after the breeding season into a special gray or dark plumage, harmonizing well with the autumnal shades of the grass and lichened rocks. In the late fall a second plumage of immaculate white is assumed, affording these birds great protection on the snowy wastes where they. Fig. —Willow Ptarmigan in early spring, with brown feathers beginning to replace the white. 1/4 natural size. live. In spring a third suit is donned—brown and parti- coloured like the environment, which late in the year is still covered with patches of snow here and
. The bird, its form and function. Birds. 5° The Bird after the breeding season into a special gray or dark plumage, harmonizing well with the autumnal shades of the grass and lichened rocks. In the late fall a second plumage of immaculate white is assumed, affording these birds great protection on the snowy wastes where they. Fig. —Willow Ptarmigan in early spring, with brown feathers beginning to replace the white. 1/4 natural size. live. In spring a third suit is donned—brown and parti- coloured like the environment, which late in the year is still covered with patches of snow here and there. This too is the nuptial plumage, and lasts until the gray garb completes the cycle of the year's changes. The wing- feathers are white all the year, but when the wings are. 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
