A History of North American Birds, Land Birds. Volume 3

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Robert Ridgway. A History of North American Birds, Land Birds. Volume 3

RAPTORES.1—The Birds of Prey

Family STRIGIDÆ.—The Owls

Genera and Subgenera

Genus STRIX, Savigny

Genus OTUS, Cuvier

Genus SYRNIUM, Savigny

Genus NYCTALE, Brehm

Genus SCOPS, Savigny

Genus BUBO, Dum

Genus SURNIA, Duméril

Genus GLAUCIDIUM, Boie

Genus MICRATHENE, Coues

Genus SPEOTYTO, Gloger

NOTE

Family FALCONIDÆ.—The Falcons

Genera

Subfamily FALCONINÆ

Genus FALCO, Auct

Genus POLYBORUS, Vieillot

Genus PANDION, Savigny

Genus NAUCLERUS, Vigors

Genus ELANUS, Savigny

Genus ICTINIA, Vieillot

Genus ROSTRHAMUS, Lesson

Genus CIRCUS, Lacepede

Genus NISUS, Cuvier

Genus ASTURINA, Vieillot

Genus ANTENOR, Ridgway

Genus ONYCHOTES, Ridgway

Genus BUTEO, Cuvier

Genus ARCHIBUTEO, Brehm

Genus AQUILA, Auctorum

Genus HALIAËTUS, Savigny

Family CATHARTIDÆ.—The American Vultures

Genera and Subgenera

Genus PSEUDOGRYPHUS, Ridgway

Genus RHINOGRYPHUS, Ridgway

Genus CATHARISTA, Vieillot

NOTE

Family COLUMBIDÆ.—The Pigeons

Subfamily COLUMBINÆ

Genus COLUMBA, Linnæus

Genus ECTOPISTES, Swainson

Genus MELOPELIA, Bonap

Genus ZENAIDA, Bonap

Genus ZENAIDURA, Bonap

Genus SCARDAFELLA, Bonap

Genus CHAMÆPELIA, Swainson

Genus OREOPELEIA, Reichenbach

Genus STARNŒNAS, Bonaparte

Family CRACIDÆ.—The Curassows

Subfamily PENELOPINÆ

Genus ORTALIDA, Merrem

Family MELEAGRIDÆ.—The Turkeys

Genus MELEAGRIS, Linnæus

Family TETRAONIDÆ.—The Grouse

Genera

Genus CANACE, Reichenbach

Genus CENTROCERCUS, Swainson

Genus PEDIŒCETES, Baird

Genus CUPIDONIA, Reichenbach

Genus BONASA, Stephens

Genus LAGOPUS, Vieillot

Family PERDICIDÆ.—The Partridges

Subfamily ORTYGINÆ

Synopsis of Genera found in the United States

Genus ORTYX, Stephens

Genus OREORTYX, Baird

Genus LOPHORTYX, Bonaparte

Genus CALLIPEPLA, Wagler

Genus CYRTONYX, Gould

APPENDIX

I. ADDITIONS AND CORRECTIONS

II. EXPLANATION OF TERMS USED IN DESCRIBING THE EXTERNAL FORM OF BIRDS

GLOSSARY

GLOSSARY OF TECHNICAL TERMS USED IN DESCRIPTIVE ORNITHOLOGY

Отрывок из книги

Char. Eyes directed forward, and surrounded by a radiating system of feathers, which is bounded, except anteriorly, by a ruff of stiff, compactly webbed, differently formed, and somewhat recurved feathers; loral feathers antrorse, long, and dense. Plumage very soft and lax, of a fine downy texture, the feathers destitute of an after-shaft. Oil-gland without the usual circlet of feathers. Outer webs of the quills with the points of the fibres recurved. Feathers on the sides of the forehead frequently elongated into ear-like tufts; tarsus usually, and toes frequently, densely feathered. Ear-opening very large, sometimes covered by a lappet. Œsophagus destitute of a dilated crop; cœca large. Maxillo-palatines thick and spongy, and encroaching upon the intervening valley; basipterygoid processes always present. Outer toe reversible; posterior toe only about half as long as the outer. Posterior margin of the sternum doubly indented; clavicle weak and nearly cylindrical, about equal in length to the sternum. Anterior process of the coracoid projected forward so as to meet the clavicle, beneath the basal process of the scapula. Eggs variable in shape, usually nearly spherical, always immaculate, pure white.

The Owls constitute a very natural and sharply limited family, and though the species vary almost infinitely in the details of their structure, they all seem to fall within the limits of a single subfamily.

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Scops asio, var. kennicotti.

The Scops kennicotti must, however, be recognized as a well-marked geographical race, and, not taking into consideration any natural laws which influence changes in species, it would be very proper to recognize the validity of the present bird. If, however, the rule of which we speak will apply to others, as indeed it does to a majority of the birds of the region inhabited by the Scops kennicotti, the extreme conditions of some species of which are even more widely different than in the present instance, and which have been referred to their lighter representatives in consequence of the applicability of this law, we cannot possibly do otherwise with it.

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