. The birds of Ohio; a complete scientific and popular description of the 320 species of birds found in the state . son, but the majority of all birds taken will prove to be puz-zling intergrades. The reason for this I conjecture to be as follows: Oto-coris alpestris (or more properly, 0. alpcstris alpcstris) attains its maximum 1 A Review of the Larks of the Genus Otocoris (Proceedings of U. S. Natl Museum, Vol XXIV. 2 This series of pictures taken by Mr. Warren in midwinter at Colorado Springs and represents(;. a. leucolacma (Coues) or, possibly, O. a. hoyti Bishop. In either case the differ
. The birds of Ohio; a complete scientific and popular description of the 320 species of birds found in the state . son, but the majority of all birds taken will prove to be puz-zling intergrades. The reason for this I conjecture to be as follows: Oto-coris alpestris (or more properly, 0. alpcstris alpcstris) attains its maximum 1 A Review of the Larks of the Genus Otocoris (Proceedings of U. S. Natl Museum, Vol XXIV. 2 This series of pictures taken by Mr. Warren in midwinter at Colorado Springs and represents(;. a. leucolacma (Coues) or, possibly, O. a. hoyti Bishop. In either case the differences between themand our local species are too slight to he noticeable in a black and white reproduction. 200 THE HORNED EARK. development in the region east of Hudson Bay; 0. a. hoyti in the region west;while 0. a. praticola, normally centering in the northern prairie states border-ing the Mississippi River, is rapidly extending its range to include the regionnorth of the Great Lakes (as well as pushing east to the Atlantic Coast).It is evident, therefore, that the ai-ea south of Hudson Bay and north of Ohio. Taken m Colorado HORNED LARK—FEMALE. Photo by B. R. Warren. affords a meeting ground for the three forms. It is the summer populationof this extensive debatable ground which invades Ohio in winter, and floodsus with intergrades. It is noteworthy in this connection that the Ohio breed-ing birds, typical 0. a. praticola, so far as known, are largely lost to sightduring the winter inundation from the north ; and the question arises whetherthey do not retire southward as a whole or in part during the winter season. THE HOYT HORNED LARK. 201 No. HORNED LARK. A. O. U. No. 474k. Otocoris alpestris hoyti Bishop. Description.—Similar to 0. alpestris, but the yellow of throat paler or re-stricted to central stripe; the eyebrow white or, rarely, slightly yellowish. Seasonaland sexual changes like preceding. This seems to be a well marked subspecies. I have examined spec
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1903
