A Synopsis of the Birds of North America. John James AudubonЧитать онлайн книгу.

      PREFACE

      I have been induced to present this Volume to the Public by two considerations. The figures and descriptions contained in the works entitled “The Birds of America,” and “Ornithological Biography, or an Account of the Habits of the Birds of the United States,” having been issued in the miscellaneous manner which was thought best adapted to the occasion, or which was rendered necessary by circumstances, seemed to require a systematic index, in which the nomenclature should be corrected, and the species arranged agreeably to my present views. This Synopsis, then, will afford a methodical catalogue of all the species hitherto discovered in the vast regions, extending from the northern confines of Mexico to the Polar Seas, and which have been described, and, with few exceptions, depicted in the works above named. Another important object has been to present an arrangement of these birds, so characterized, that a person desirous of studying them, might, without much difficulty, be enabled to discover their names, and trace some of the most important features in their organization.

      The species are disposed into genera and families; and, although the location of the groups is not such as, in all respects, to satisfy me, the arrangement will, I trust, be found in some degree useful. It will be seen that, although I have adopted many of the modern groups, I have not sectioned our birds on so minutely divided a scale as that employed by some recent writers. Besides the characters of the Families, Genera, and Species, which are given with considerable detail, I have presented a short account of the Geographical Distribution of the species, and references to the principal authors by whom they have been described. I am confident that these notices will suffice to enable the student to determine with certainty any species that may come under his consideration, and that the information respecting its habits, which he will find in the works referred to, will afford him at least sufficient knowledge to form a basis for the more extended observation which he may contemplate. To the name of the genus I have appended that of the author by whom it has been instituted; and with the specific names I have dealt in the same manner, giving as authorities the individuals who first employed them, although they may have referred them to different genera. It is probable that many errors have been made in this department; but I shall be happy to see them corrected, as my wish is to do justice to all.

      On this occasion I have again to acknowledge the benefit derived from the aid of my friend Mr Macgillivray, whose general knowledge of ornithology, and perfect candour, have rendered his advice peculiarly valuable.

      FAMILY I. VULTURINÆ. VULTURINE BIRDS, OR VULTURES

      Bill of moderate length, stout, cerate; upper mandible with the tip elongated and decurved; lower mandible rounded and thin-edged at the end. Head rather small, or of moderate size, ovato-oblong, and with part of the neck destitute of feathers. Eyes of moderate size, without projecting ridges. External aperture of ears rather small and simple. Skin over the fore part of the neck bare or merely downy. Tarsus rather stout, bare, and shorter than the middle toe; hind toe much smaller than the second; anterior toes connected at the base by a web; claws large, moderately curved, rather acute. Plumage full and rather compact. Wings very long, subacuminate. Œsophagus excessively wide, and dilated into a crop; stomach rather large, somewhat muscular, with a soft rugous epithelium; intestine of moderate length and width; cœca extremely small. The young when fledged have the head and upper part of the neck generally covered with down. Eggs commonly two.

      GENUS I. CATHARTES, Illiger. TURKEY-VULTURE

      Bill of moderate length, rather slender, somewhat compressed; upper mandible with its dorsal outline nearly straight and declinate to the end of the large cere, then decurved, the edges a little festooned, rather thick, the tip descending and rather obtuse; lower mandible with the angle long and rather narrow, the dorsal line ascending and slightly convex, the back broad, the edges sharp, towards the end decurved. Nostrils oblong, large, pervious. Head oblong. Tongue deeply concave or induplicate, its edges serrate with reversed papillæ. Œsophagus dilated into an enormous crop; stomach moderately muscular; duodenum convoluted. Head and upper part of neck denuded, being only sparingly covered with very short down. Wings very long and extremely broad; third, fourth, and fifth primaries longest, first much shorter. Tail of moderate length, nearly even. Tarsus short, rather stout, roundish, reticulate. Hind toe very small, second a little shorter than fourth, third very long, all scutellate for more than half their length. Claws strong, arched, compressed, obtuse.

      1. 1. Cathartes Californianus, Lath. Californian Turkey-Vulture. – Turkey-Buzzard

      Nostrils small, elliptical, occupying only the posterior half of the nasal groove; feathers of the ruff and breast lanceolate and acuminate; primaries finely acuminate, fourth and fifth longest; tail rather short, even. Adult with the head bare and yellowish-red, the plumage brownish-black, the secondaries grey, tipped with white, their coverts large, tipped with the same. Young with the head downy and dusky, the plumage blackish-brown, the feathers edged with light brown, the secondary coverts tipped with brownish-white.

      Male, length 50. Female, length 55.

      2. 2. Cathartes Aura, Linn. Red-headed Turkey-Vulture. – Turkey-Buzzard. Turkey-Vulture

      Nostrils very large, elliptical, occupying the whole nasal cavity; feathers of the ruff and breast ovate, rounded; skin over the crop bare; tail rounded. Adult with the skin of the head and neck wrinkled and blood-red, the horny part of the bill yellowish-white; the plumage blackish-brown, deepest on the neck and under parts; feet flesh-coloured, tinged with yellow. Young when fledged with the skin of the head and neck dull flesh-coloured and more downy, the horny tip of the bill light blue, the plumage nearly as in the adult, but the wing-coverts and secondaries spotted with whitish.

      Male.– Length 32, extent of wings 76.

      From Texas to Pennsylvania. Inland westward to the Columbia River. Resident.

      3. 3. Cathartes atratus, Wils. Black-headed Turkey-Vulture. – Black Vulture. Carrion Crow

      Nostrils very large, oblong, occupying the whole nasal cavity; feathers of the neck short, very broad, abruptly rounded, advancing farther on the hind part; skin over the crop feathered; tail even. Adult with the skin of the head and neck corrugated, dusky, the horny part of the bill greyish-yellow, the plumage bluish-black, feet yellowish-grey. Young when fledged with the head and neck closely covered with dusky down; the plumage blackish-brown.

      Male, length 26, extent of wings 54.

      From Texas to New Jersey. Up the Mississippi to the Ohio. Columbia River. Resident.

      FAMILY

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