137. 1. Cinclus Americanus, Swains. American Dipper.

Plate CCCLXX. Adult. Plate CCCCXXXV. Young.

Head and neck chocolate-brown, upper parts very deep bluish-grey,

lower somewhat lighter, and tinged anteriorly with brown. Young with

the upper parts deep bluish-grey, the head and hind neck slightly

tinged with brown; lower parts lighter, the feathers margined with

whitish, the throat with a slight tinge of brown.

_Male_, 7-1/2, 10-1/2.

Rocky Mountains. Oregon Territory. North California. Not abundant.

Cinclus Pallasii, Bonap. Amer. Orn. v. ii. p. 173.

Cinclus Americanus, American Dipper, Swains. & Rich. F. Bor.

Amer. v. ii. p. 173.

Black Water-Ouzel or Dipper, Nutt. Man. v. ii. p. 358.

American Dipper, Cinclus Americanus, Aud. Orn. Biog. v. iv. p.

493; v. v. p. 303.

GENUS II. ORPHEUS, Swains. MOCKING-BIRD.

Bill of moderate length or longish, rather slender, straight or

slightly arched, broader than high at the base, compressed toward the

end, acute; upper mandible with the ridge rather narrow, the sides

convex toward the end, the notches very slight, the tip narrow; lower

mandible with the angle of moderate length, the dorsal line straight

or slightly decurved toward the end, the sides nearly erect, the tip

narrow. Nostrils oblong, partially concealed by the feathers. Head of

ordinary size, ovato-oblong; neck of moderate length; body rather

slender. Feet of ordinary length, slender; tarsus scarcely so long as

the middle toe and claw; hind toe of moderate length, stout, lateral

toes equal; claws moderate, arched, compressed, acute. Plumage soft

and blended. Bristles rather long. Wings of ordinary length, broad,

rounded, the first quill very small, the fourth and fifth longest.

Tail very long, straight, much rounded, or graduated.

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