CHAMÆA FASCIATA.—(Gambel.) The Ground Wren. PLATE VII.—Adult Male.

This little bird was discovered in California, by William Gambel, M. D., an enthusiastic and highly talented young naturalist, who, during an overland journey across the North American Continent, made many discoveries, and added much valuable information to several departments of Natural History, and we regret to say, whose recent death, during a second expedition of the same character, occurring, as it did, so early, and thus terminating so prematurely a life of such promise, is to be deplored as a loss to science and to his country.

Dr. Gambel’s account of this bird in the Proceedings of the Academy of Natural Sciences of Philadelphia, II. p. 265, and in the Journal of the same society, quarto, I. p. 34, which is the first and, as yet, the most satisfactory, is as follows: “For several months before discovering the bird, I was attracted in the fields of dead mustard stalks, the weedy margins of streams, low thickets and bushy places, by a continued loud, crepitant, grating scold, which I took for that of a species of Wren, but at last found it to proceed from this Wren-tit, if it may be so called. It was difficult to be seen, and kept in such places as I have described, close to the ground; eluding pursuit by diving into the thickest bunches of weeds and tall grass, or tangled bushes, and uttering its grating Wren-like notes whenever approached. But if quietly, watched, it may be seen, when searching for insects, mounting the twigs and dried stalks of grass sideways, jerking its long tail, and holding it erect like a Wren, which, with its short wings in such a position, it much resembles.

“Sometimes it utters a slow, monotonous, singing chicadee note, like pee, pee, pee, pee, peep; at other times its notes are varied, and a slow whistling continued pwit, pwit, pwit, pwit, is heard. Again, in pleasant weather, towards spring, I have heard individuals answering each other, singing in a less solemn strain not unlike sparrows, a lively pit, pit, pit, tr, r, r, r, r, r, but, if disturbed, they at once resumed their usual scold.”

Mr. Bell, whose collection contained numerous specimens of this bird, found 40 it abundant in the neighbourhood of San Francisco, and has kindly allowed us to use his memoranda: “I observed this bird in bushes and briers every where along the roads, and in brush heaps on lands which had been recently cleared, though it appeared rather to prefer damp places. It was very pert, and not easily frightened, and as it moved about with its tail erect, uttered several rather peevish notes, unlike those of any other bird with which I am acquainted.

“The white iris of this bird, when in its native haunts, is quite readily observed, and with its manners and the localities which it frequents, reminded me, in some measure, of the white-eyed Vireo, (V. noveboracensis.) Its skin is unusually strong for such a small bird, and it has a remarkable development of the muscles of the thighs, and, in fact, unusual strength and firmness of the muscular system generally.”

DESCRIPTION AND TECHNICAL OBSERVATIONS.

Genus Chamæa. Gambel in Proceedings Acad. Philada. III. p. 154, Feb., 1847.

Bill short, slightly curved, rather acute, both mandibles entire, ridge of the upper curving nearly from the base, depression for the nostrils large, oval and exposed, nostrils opening beneath a membrane in the depression. Wings very short, rounded; tail long, and graduated; tarsi long, and rather slender.

One species only known.

Chamæa fasciata. (Gambel.)

Parus fasciatus. Gambel, Proc. Acad. Philada., II. p. 265. August, 1845.

Form. Body rather short and robust; wings short and rounded, with the sixth and seventh primaries longest, and nearly equal; tail long and graduated, external feathers about an inch and a half shorter than those in the middle of the tail. Entire plumage of the body composed of long, silky, puff-like feathers.

Dimensions of a skin from California. Total length from tip of bill to end of tail, about 5½ inches; wing, 2½; tail, 3½ inches.

Colours. Male. Head very dark cinerous, lighter on the cheeks and sides of the neck; back, rump, external margins of the quills and tail feathers olive brown. Wings and tail dusky brown; the latter with many crimp-like transverse lines of darker, more distinct in some specimens than others; quills also with similar lines on their inner webs, but frequently very obscure.

Beneath, from the base of the mandible to the abdomen, pale reddish, running into olive on the flanks, and with many of the feathers on the throat and 41 breast having longitudinal stripes of light cinereous olive; under tail coverts brown.

A distinct ring around the eye, and spot on the nares, whitish cinereous.

Bill and feet, dark brownish black.

Iris, white.

Female. Similar to the male, but with the colours rather less vivid.

Hab. California. Spec. in Mus. Acad. Philada.

Obs. We consider this bird as decidedly related to the Wrens, and as forming a well characterized genus, of which it is, as yet, the only known species. It is frequently brought in collections from Western America.

The plant represented in the plate is the Eschscholtzia Californica, a native of California.

The figure in our plate is about three-fourths of the natural size.

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