. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 335 The Lesser Scaup Duck is abundant on Lake Michigan and in the interior waters of Illinois and Wisconsin during the migrations. It may occasionally breed in Illinois, and, according to Kumlien and Hollister, it breeds in Wisconsin. The nest is on the ground, usually composed of grass and lined with down. The eggs are 7 to 10, grayish buff or olive buff, and measure about x inches. "An exceedingly abundant migrant, and in years when the Lake does not become frozen over, is
. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 335 The Lesser Scaup Duck is abundant on Lake Michigan and in the interior waters of Illinois and Wisconsin during the migrations. It may occasionally breed in Illinois, and, according to Kumlien and Hollister, it breeds in Wisconsin. The nest is on the ground, usually composed of grass and lined with down. The eggs are 7 to 10, grayish buff or olive buff, and measure about x inches. "An exceedingly abundant migrant, and in years when the Lake does not become frozen over, is a resident through the year. ''= * * * About the time they leave for more northern breeding grounds, they congregate in very large flocks on rivers or small lakes and soon all have disappeared from these haunts, and none, except the comparatively few which remain to breed, are found there again until they return in Autumn, about the 5th to loth of ; (Nelson, Birds of N. E. Illinois, 1876, p. 141.) "An exceedingly abundant migrant both spring and fall. * * * * To a limited extent a breeding species even in southern Wisconsin, having been known to nest anywhere from the southern counties ; (Kumlien and Hollister, Birds of Wisconsin, 1903, p. 23.) 55. Marila collaris (Donov.). Ring-necked Duck. Aythya collaris (Donov.), A. O. U. Check List, 1895, p. 53. Distr.: North America, breeding chiefly from North Dakota to the Athabaska region and migrating south in winter to the Gulf coast, the Greater Antilles, Lower California, and Mexico. Adult male: Head and neck, upper breast, and upper back, black, usually showing faint bluish reflections when held in the light. In the breeding season the male has an orange chestnut collar, which is usually lacking later in the season; belly, white, with the lower belly finely lined with blackish; specithim, gray; bill, dusky, showing a faint bluish gray band near the end. Adult female: Head, brown- ish, the sides m
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