. The birds of Illinois and Wisconsin. Birds; Birds. S88 Field Museum of Natural History—Zoology, Vol. IX. Genus PASSERHERBULUS Maynard. 253. Passerherbulus caudacutus nelsoni (Allen). Nelson's Sharp-tailed Sparrow. Ammodramus caudacutus nelsoni Allen, A. O. U. Check List, 1895, p. 227. Breeds from northern Illinois and northwestern Indiana northward through the Dakotas and Manitoba to Athabaska; south in winter to Texas. Occurs on Atlantic coast from New England to South Carolina and northern Florida during migrations; frequents fresh water marshes. Adult: Crown, dark olive brown, wit
. The birds of Illinois and Wisconsin. Birds; Birds. S88 Field Museum of Natural History—Zoology, Vol. IX. Genus PASSERHERBULUS Maynard. 253. Passerherbulus caudacutus nelsoni (Allen). Nelson's Sharp-tailed Sparrow. Ammodramus caudacutus nelsoni Allen, A. O. U. Check List, 1895, p. 227. Breeds from northern Illinois and northwestern Indiana northward through the Dakotas and Manitoba to Athabaska; south in winter to Texas. Occurs on Atlantic coast from New England to South Carolina and northern Florida during migrations; frequents fresh water marshes. Adult: Crown, dark olive brown, with a grayish streak through the centre; an orange bufE streak over the eye; a patch of gray on the ear coverts, and cheeks bor- dered by orange buff below; nape, tinged with grayish olive; feathers of the back, grayish olive, sometimes brownish olive, margined with gray or pale buff; throat, pale buff or bufEy white; breast and sides of body, ochraceous buff, faintly streaked with dusky; middle of belly, white or whitish; bend of wing, tinged with yellow; tail feathers, narrow and pointed, dull brown in color; the shafts of tail feathers, dark brown, and usually (but not always) with numerous indistinct narrow dusky bars, giving them a "watered" appearance; primaries, brown; greater coverts and inner secondaries,dark brown, broadly edged with rufous brown and pale buff. Length, ; wing, ; tail, 2; bill, .45. Nelson's Sharp-tailed Sparrow, or Sharp-tailed Finch as it is often called, is abundant at times in Illinois during the migrations, but ap- parently much less common in spring than in the fall. A few remain to breed in the state, although the majority go further north. Nelson states: "The 12th of June, 1875, I saw several of these birds in the dense grass bordering Lake Calumet, were undoubtedly ; (Birds N. E. 111., 1876, p. 107.) Mr. Frank M. Woodruff writes, " I have taken the nest and eggs of this species from near Cal
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