. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin—Cory. 553 The Cowbird is a common summer resident throughout Illinois and Wisconsin. The female builds no nest of her own, but deposits her eggs in the nests of other birds, usually selecting that of some bird smaller than herself. The Yellow Warbler, which is included in the list of desirable species by the Cowbird mother to relieve her of domestic cares, often gets the better of her undesirable visitor by building a second story to her nest, thereby covering the despised egg. Instances are known
. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin—Cory. 553 The Cowbird is a common summer resident throughout Illinois and Wisconsin. The female builds no nest of her own, but deposits her eggs in the nests of other birds, usually selecting that of some bird smaller than herself. The Yellow Warbler, which is included in the list of desirable species by the Cowbird mother to relieve her of domestic cares, often gets the better of her undesirable visitor by building a second story to her nest, thereby covering the despised egg. Instances are known where the rightful owner, to avoid being forced to start an avian elee- mosynary institution, was compelled to build a third and even a fourth story to her nest before she was left in peace to attend to her own family duties. Usually one, sometimes two, and rarely three or four eggs are left to be incubated and the young reared by the foster mother. A nest of the Scarlet Tanager, taken by Dr. N. Dearborn at Fox Lake, 111., on June 14, 1903, contained the remarkable number of six, well incubated Cowbird's eggs and none of the rightful owner. When found, the female Tanager was on the nest. The eggs are dull white, or pale buff, irregularly and thickly marked with brown, and measure about .87 x .66 Section of four-story nest of Yellow Warbler in which Cowbird's eggs have been 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 Cory, Charles B. (Charles Barney), 1857-1921. Chicago
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Keywords: ., bookauthorcory, bookcentury1900, bookdecade1900, booksubjectbirds
