Cinclus Americanus, Swains. and Richards. Fauna Bor.-Amer. vol. ii. p. 173.
Black Water-Ousel, or Dipper, Nuttall, Manual, vol. ii. p. 358.
Adult Male. Plate CCCLXX. Fig. 1.
Bill rather short, slender, slightly ascending, much compressed toward the end; upper mandible with its dorsal line slightly arched, the ridge rounded, the sides convex, the edges sharp and inflected with an obscure notch close to the narrow slightly deflected tip: lower mandible slightly bent upwards, the angle medial and very narrow, the dorsal line ascending and slightly convex, the tip narrow and rather acute, the gape-line straight. Nostrils linear, direct, in the lower and fore part of the nasal membrane which is covered with very short feathers. Eyes rather small; eyelids densely feathered.
The general form is short, full, and compact; the head oblong, compressed, rather small; the neck rather short; the body rather deeper than broad. Legs strong, of ordinary length; tarsus compressed, covered anteriorly with a long undivided plate and four inferior scutella, posteriorly with two long plates meeting at a very acute angle. Toes rather large and strong; the first, second, and fourth, nearly equal in length, but the first much stronger, the third much longer; the third and fourth united as far as the second joint of the latter. Claws rather long, arched, much compressed, that of the hind toe considerably larger.
Plumage very soft and blended, the feathers oblong and rounded; those about the base of the bill very short and velvety. No bristles at the base of the bill. Wings rather short, broad, convex, and rounded; the first quill very short and narrow, being about a third of the length of the second, which is shorter than the fourth, the third longest, and with the next three slightly cut out on the outer web towards the end; secondary quills long, broadband rounded. Tail short, even, of twelve rather broad feathers, which are slightly decurved. Legs feathered to the joint, but the tarsus entirely bare.
Bill brownish-black; iris hazel; feet flesh-coloured, toes dusky towards the end; claws yellowish-grey. The general colour of the plumage is blackish-grey or deep bluish-grey; the head and neck chocolate-brown, that colour extending lower on the fore part of the neck than behind; the downy feathers of both eyelids white; the quills and tail-feathers dusky; the secondaries terminally margined with white.
Length to end of tail 7 1/2 inches; extent of wings 10 1/2; wing from flexure 3 3/4; tail 2 1/4; bill along the ridge 9/12, along the edge of lower mandible 11/12 tarsus 1 1/12; hind toe 5/12, its claw 4/12; middle toe 10/12, its claw 4/12.
Adult female. Plate CCCLXX. Fig. 2.
The Female is in all respects similar to the male.