. The birds of Illinois and Wisconsin. Birds; Birds. 66o Field Museum of Natural History — Zoology, Vol. Kirtland's Warbler. Space below the eye, black; a narrow line of black across forehead bordering base of upper mandible; auricular region, slaty gray, an imperfect whitish orbital ring, broken in front; back, grayish buff, streaked with black; upper tail coverts, slaty gray; under parts, pale yellow, usually with small black spots on the breast; sides of body, grayish, streaked with black. (Some male specimens from the Bahama Islands, taken in March, have the breast practically im- mac
. The birds of Illinois and Wisconsin. Birds; Birds. 66o Field Museum of Natural History — Zoology, Vol. Kirtland's Warbler. Space below the eye, black; a narrow line of black across forehead bordering base of upper mandible; auricular region, slaty gray, an imperfect whitish orbital ring, broken in front; back, grayish buff, streaked with black; upper tail coverts, slaty gray; under parts, pale yellow, usually with small black spots on the breast; sides of body, grayish, streaked with black. (Some male specimens from the Bahama Islands, taken in March, have the breast practically im- maculate.) Two outer tail feathers marked with a of white on terminal portion of inner webs, the white patch much larger on the outer feather than on the second; under tail coverts, whitish; greater wing coverts,'brownish black, narrowly edged with grayish white or whitish. Adult female in spring: Similar to the male, but back tinged with brownish and the under parts slightly paler yellow, the breast more extensively spotted. Immature birds in fall and winter resemble the female, but have the crown, like the back, without gray, and the whole breast thickly spotted with blackish. The yellow under parts, streaked with black on the sides and usually spotted on the breast, combined with the black streaked back and grayish rump, will usually distinguish this species. Length, ; wing, ; tail, ; bill, .38. Three specimens of this rare warbler have been taken in Illinois and one recorded from Wisconsin. The records are as follows:. 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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