. The birds of Illinois and Wisconsin. Birds; Birds. 578 Field Museum of Natural History â Zoology, Vol. IX. lations, usually accompanied on the downward swing by the familiar chee-e-wee. Nidification begins in May. The nest is built in large bushes or low trees, and is woven of grass and plant fibre, lined with thistle down. The eggs are from 3 to 6, pale blue or bluish white in color, and measure about .66 x .47 inches. Genus SPINUS Koch. 243. Spinus pinus (Wils.). Pine Siskin. Distr.: " North America generally, breeding in the British Prov- inces, Rocky Mountains, Sierra Nevada, and hi


. The birds of Illinois and Wisconsin. Birds; Birds. 578 Field Museum of Natural History â Zoology, Vol. IX. lations, usually accompanied on the downward swing by the familiar chee-e-wee. Nidification begins in May. The nest is built in large bushes or low trees, and is woven of grass and plant fibre, lined with thistle down. The eggs are from 3 to 6, pale blue or bluish white in color, and measure about .66 x .47 inches. Genus SPINUS Koch. 243. Spinus pinus (Wils.). Pine Siskin. Distr.: " North America generally, breeding in the British Prov- inces, Rocky Mountains, Sierra Nevada, and high mountains of Arizona, south to Lower California and the mountains of Mexico to Orizaba. Also breeds sparingly in northeastern United ; (A. 0. U.) Adult: Upper plumage, streaked with pale brown and dark brown; under parts, grayish white, streaked with dusky; rump, yellow,. ""'"Oil â Pine Siskin. streaked with dusky; at times the whole plumage faintly tinged with yellow and again hardly noticeable; basal portion of quills and tail, yellow. Sexes, similar. Length, ; wing, ; tail, 2; bill, .35. The yellow markings at the base of the wing and tail feathers will distinguish this species. This species is common in Illinois and Wisconsin during the mi- grations and a more or less common winter resident, especially in. 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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