. The birds of Illinois and Wisconsin. Birds; Birds. 298 Field Museum of Natural History — Zoology, Vol. IX. Genus GELOCHELIDON Brehm. 22. Gelochelidon nilotica (Hasselq.). Gull-billed Tern. Distr.: Nearly cosmopolitan; occurs in North America chiefly along Gulf of Mexico and Atlantic coast as far north as New Jersey (ac- cidental in Massachusetts); winters from the West Indies and Mexico south to Brazil. Adult in summer: Top of head and nape, black; upper part, includ- ing rump and tail, pearl gray; under parts, white; bill and feet, black, the former comparatively short and stout. Adult in w
. The birds of Illinois and Wisconsin. Birds; Birds. 298 Field Museum of Natural History — Zoology, Vol. IX. Genus GELOCHELIDON Brehm. 22. Gelochelidon nilotica (Hasselq.). Gull-billed Tern. Distr.: Nearly cosmopolitan; occurs in North America chiefly along Gulf of Mexico and Atlantic coast as far north as New Jersey (ac- cidental in Massachusetts); winters from the West Indies and Mexico south to Brazil. Adult in summer: Top of head and nape, black; upper part, includ- ing rump and tail, pearl gray; under parts, white; bill and feet, black, the former comparatively short and stout. Adult in winter: Similar, but having the head and neck white, the nape, ashy, and a dusky patch in front of the eye. Length, 14; wing, 12; tail, ; bill, ; tarsus, It is far easier to establish a record than it is to reject one, because we must assume that an author who makes the statement that a bird occurs in a certain locality must have a satisfactory reason for so doing. It is not given on hearsay evidence, but is a plain statement of fact, or must be accepted as such until we have good reason to doubt it. There- fore, although I have never seen a specimen of this Tern taken either in Illinois or Wisconsin, and can find no record of its actual capture in either state, I include it upon the authority of the following published statements. "An exceedingly rare visitant during ; (Nelson, Birds N. E. 111.,,1876, p. 147.) "Rare summer ; (Ridgway, Cat. Birds Illinois, 1881, p. 202.) " Rather ; (A. J. Cook, Birds Michigan, 1893, p. 34.) Also included in Prof. Ridgway's Ornithology of Illinois, probably on some other authority, as he makes no remarks whatever concerning it. It was included by Dr. Hoy in his list of Wisconsin Birds of 1852. Kumlien and Hollister say: "We know of no actual record for Wisconsin and have never seen the bird in the ; (Birds of Wisconsin, 1903, p. 130.). Please note that these image
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