Covert feather

Definition and stakes

Portrait of George Wharton James George Wharton James,  The Story of Scraggles

“ With first one foot, then the other, she scratches her head with inconceivable rapidity. Then, getting a little oil from her receptacle, she begins to preen; under the left wing, down each feather, occasionally darting her bill like lightning upon some other feather that appears to her to need attention. Such screwing of the neck, twisting of the body, standing on tiptoes to get to the feathers on her body, such stretching to reach the tips! ”
Source: Gutenberg

Portrait of Spencer Fullerton Baird Spencer Fullerton Baird,  A History of North American Birds…

“ Ground-color of the lower parts white, each feather with a medial stripe of black, this throwing off distinct bars to the edge of the feather; the medial black is largest on sides of the breast, where it expands into very large conspicuous spots, having a slight rusty exterior suffusion; the abdomen medially, the anal region, and the lower tail-coverts, are almost unvaried white. ”
Source: Gutenberg

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