. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology, an outline of the structure and classification of birds, and Field ornithology, a manual of collecting, preparing, and preserving birds . pecies. Bill and feet under ; extent ; wing and tail, each, about ; bill : or more. Young: Vermiculated beh)W with dusky, u
. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology, an outline of the structure and classification of birds, and Field ornithology, a manual of collecting, preparing, and preserving birds . pecies. Bill and feet under ; extent ; wing and tail, each, about ; bill : or more. Young: Vermiculated beh)W with dusky, upon a brownish ground, about tothe same extent as is seen in very old examples of L. boreaUs. General tone of upper partsless pure than in the adult; scapulars and tail-coverts not purely white; black bar of head lessfirm, but as far as it goes maintaining the characters of the species. At a very early age, theupi)er parts, including the whitish of scapulars and tail-coverts, are finely vermiculated withdusky waves. The ends of the quills, wing-coverts, and tail-feathers often have rusty or rufous 372 SYSTEMA TIC SYXOPSIS. — PASSERES—OSCINES. markings. Extreme examples of exciibitorides look very different from hidoncianus proper,but the two are observed to melt iut(j each other when many specimens are compared, so thatno specific character can be assigned. Middle and Western N. Am. and Mexico; N. to the. Fig. lSS. — Loggerhead Shrike. Saskatchewan, E. to Ohio, New York, Canada, and even New England. It is an arbitrarydistinction which assigns this variety a range restricted to Western N. Am. The nest andeggs are indistinguishable from those of ludovicianus proper; both resemble those of L. horeaUs,but the eggs average smaller — about X L,. 1. gambeli. (To Wm. Gambel.) California Shrike. The Pacific coast form, doubt-fully attempted to be distinguished by its sordid coloration. Ridgw., Man. 1887, p. 467;CouES, Key, 4th ed. 1890, pr899; A. 0. U. List, 2d ed. 1
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
