. The birds of Illinois and Wisconsin. Birds; Birds. * GROUP 1. Wing, from 3.25 to 4.75 inches long. PART 1. The following species have the under parts more or less streaked or spotted :—. Thrush. Back, rump, and upper tail coverts, olive, about the same color; eye ring, cheeks, and lores, pale buff; no white on wing coverts. Hylocichla ustulata swainsonii. Olive-backed Thrush. See No. 362. *For directions for measurement, see page 21.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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