Part 145

Mergus Albellus, Bonap. Syn. p. 398.

Smew or White Nun, Nutt. Man. v. ii. p. 467.

Smew or White Nun, Mergus Albellus, Aud. Orn. Biog. v. iv. p. 350.

FAMILY XLI. PELECANINÆ. PELICANS.

Bill longer than the head, rather slender, straight, upper mandible with the ridge separated from the side by a groove, and terminated by a narrow, generally decurved, pointed unguis; lower mandible with the crura elastic and extensile, the angle very long and narrow. Nostrils basal, lateral, linear, small, or obsolete. Space around and before the eye generally bare, as is a portion of the gular sac. Head generally of moderate size, but various; neck long; body elongated, rather slender. Feet short and stout; tibia bare at its lower part; tarsus short, very stout, compressed, scaly or scutellate in front; toes four, all connected by webs, and scutellate; first small, fourth longest. Claws short, strong, curved, rather blunt, that of the third toe generally pectinate. Plumage soft, blended, on the back compact and imbricated. Wings long; tail of moderate length, narrow, rounded or tapering. Tongue extremely small, triangular, fleshy; œsophagus excessively wide; a gular sac, sometimes of enormous capacity; proventricular belt generally discontinuous; stomach very small, slightly muscular, epithelium smooth; a globular pyloric lobe; intestine very long and slender; cœca small, cylindrical; cloaca globular. Trachea simple, flattened; no inferior laryngeal muscles.

GENUS I. PHALACROCORAX, Briss. CORMORANT.

Bill about the length of the head, rather slender, nearly straight, compressed toward the end; upper mandible with the dorsal line concave, until on the unguis, where it is decurved, the ridge convex, flattened toward the end, separated from the sides by a narrow groove, the sides convex, the edge sharp and nearly straight as far as the unguis, which is decurved, convex above, acute, its tip ascending far beyond that of the lower; lower mandible with the angle long and very narrow towards the end, filled up by an extensile membrane, which extends to the level of the angle of the mouth; the outline of the crura very slightly convex, that of the terminal part descending and very slightly convex, the sides convex, the edges sharp and inflected, the tip compressed, with its marginal outline decurved. Nostrils obliterated (in youth open). Head rather small, oblong; neck long and rather thick; body full, elongated, depressed. Feet short, stout, placed far behind; tibia feathered in its whole length; tarsus very short, strong, much depressed, covered all round with angular scales; a series on part of the inner side anteriorly, and another on the lower part of the outer, scutelliform. Toes all placed in the same plane, connected by webs, and covered above by very numerous oblique scutella; first the smallest, fourth the longest. Claws rather small, strong, compressed, acute, convex above, arched, that of the third toe pectinated on its inner edge. Plumage soft, generally blended, compact on the back and wings; the small gular sac, and the space before and beneath the eye, with the eyelids, bare. Wings of moderate size, broad; primaries curved, pointed, the second longest. Tail of moderate length, very narrow, much rounded, of twelve or more narrow strong-shafted feathers. Gular sac small; tongue extremely small; œsophagus very wide; proventricular glands disposed in two large roundish masses; stomach small, slightly muscular, inner coat smooth and soft; a globular or triangular pyloric lobe; duodenum at first curving upwards; intestine very long, and of moderate width; cœca small; rectum narrow; cloaca globular. Trachea considerably flattened; bronchi of moderate width.

416. 1. Phalacrocorax Carbo, Linn. Great Cormorant.

Plate CCLXVI. Male, Female, and Young.

Tail of fourteen feathers. In summer, a small longitudinal occipital black crest, and numerous linear elongated white feathers on the head and upper part of neck; bill dusky, with the lower mandible whitish toward the base; gular sac yellow; plumage black, glossed with deep greenish-blue; at the base of the gular sac a broad gorgelet of white; a patch of white on the side over the thigh; feathers of wings and part of the back dull bluish-grey, glossed with bronze, their fringe-like margins greenish-black; primary quills greyish-black, secondary like the other wing-feathers; tail greyish-black; shafts of all the feathers black at the end, leaden-grey towards the base. Female similar. After the breeding season the white feathers on the head and sides fall off. Young, before being fledged, with the skin dull livid, the bill dusky, at the base flesh-coloured, the feet purplish-dusky, the webs yellowish-brown.

Male, 37, 62.

Ranges during winter southward to New York. Abundant from Massachusetts eastward. Breeds on high precipitous rocks, in Newfoundland, Labrador, and Baffin's Bay. Migratory.

Phalacrocorax Carbo, Bonap. Syn. p. 402.

Cormorant, Nutt. Man. v. ii. p. 479.

Common Cormorant. Phalacrocorax Carbo, Aud. Orn. Biog. v. iii. p. 458.

417. 2. Phalacrocorax dilophus, Swains. Double-crested Cormorant.

Plate CCLVII. Male.

Tail of twelve feathers. In summer an elongated tuft of about forty long, slender, loose, recurved feathers, from behind the eye to the length of an inch and a half on each side; upper mandible dusky, along the edges greenish-yellow, lower yellow, irregularly marked with dusky toward the edges; bare space on the head, and gular sac rich orange; plumage greenish-black, strongly glossed with green; imbricated feathers on the back and wings greyish-brown, their fringe-like margins greenish-black; primary quills brownish-black, secondary like the other wing-feathers; tail black; the shafts of all the feathers black. Female similar to the male. After the breeding season the tufts disappear. Young after the first moult have the head and neck mottled with greenish-black and greyish-brown, the other parts as in the adult, but the tufts on the head wanting.

Male, 33, 51.

Common as far south as the coast of Maryland, in winter. Breeds in Newfoundland and Labrador, as well as on the Saskatchewan.

Pelecanus (Carbo) dilophus, Double-crested Cormorant, Swains. & Rich. F. Bor. Amer. v. ii. p. 473.

Double-crested Cormorant, Nutt. Man. v. ii. p. 483.

Double-crested Cormorant, Phalacrocorax dilophus, Aud. Orn. Biog. v. iii. p. 420; v. v. p. 629.

418. 3. Phalacrocorax Floridanus, Aud. Florida Cormorant.

Plate CCLI. Male.

Tail of twelve feathers. In summer an elongated series of about forty linear feathers directed backwards, commencing behind the eye, and extending to the length of an inch and a half on each side; upper mandible black, along the basal margin bright blue, lower bright blue, spotted with white; bare space on the head and gular sac rich orange; plumage greenish-black, strongly glossed with green; imbricated feathers on the back and wings greyish-brown, tinged with purple, their fringe-like margins greenish-black; primary quills brownish-black, secondary like the other feathers of the wing; tail brownish-black; shafts of all the feathers brownish-black. Female similar to the male. After the breeding season the tufts disappear. Young after the first moult with the bill dull yellow, the ridge of the upper mandible dusky, naked parts of the head rich yellow; upper part of the head and neck brownish-black, tinged with green, throat grayish-white; fore neck and anterior part of breast variegated with pale brownish-grey and black; the rest of the plumage as in the adult, but the imbricated feathers of the upper parts lighter. This species differs from the last, chiefly in being smaller, and in having the elongated feathers behind the eye more slender and directed backwards instead of being recurved.

Male, 29-1/4, 46-1/2.

Constantly resident in the Floridas and their Keys, and along the coast to Texas. The young in summer pass up the Mississippi and Ohio, returning in autumn to the sea. Abundant. Breeds on trees only.