ROCKY MOUNTAIN WARBLER; VIRGINIA’S WARBLER.

_Helminthophaga virginiæ_, BAIRD, Birds N. Am. under explanation of

plates, 1860, xi, pl. lxxix, fig. I (Fort Burgwyn, N. M.); Rev.

177.—COOPER, Orn. Cal. 1, 1870, 85.

SP. CHAR. Somewhat like _H. ruficapilla_. _Male._ Top and sides of

head, back, and wings light ashy-plumbeous; quills and tail-feathers

brown, edged with pure ashy-plumbeous, the latter indistinctly and

narrowly margined with whitish internally and at the end. Rump, with

upper and lower tail-coverts, bright yellow, in vivid contrast with

the rest of the body. Crown with a concealed patch of rich chestnut.

Rest of under parts brownish-white, with a patch of rich yellow on the

jugulum. Inside of wings and axillars pure white. A white ring round

the eye. Bill and legs dusky. The colors much duller in autumn.

_Female, spring._ Similar to the male, but chestnut spot on crown

obsolete, the yellow jugular patch less distinct, the upper

tail-coverts more greenish, and the lower less rich yellow.

Length, 5.00; extent, 7.25; wing, 2.50 when fresh. Dried skin: length,

4.90; wing, 2.50; tail, 2.20; tarsus, .67.

HAB. Southern Rocky Mountains (Middle Province of United States); East

Humboldt, Wahsatch, and Uintah Mountains.

A young bird (No. 53,355, East Humboldt Mountains, Nevada, August 5)

is olive-gray above, becoming green on the rump and upper

tail-coverts; the middle and secondary coverts narrowly tipped with

pale grayish-buff, producing two indistinct bands. The lower parts are

pale dirty-buff, except the lower tail-coverts, which are

lemon-yellow; there is scarcely a tinge of yellow on the jugulum, and

not a trace of chestnut on the crown.

HABITS. But little is as yet known in regard to the habits and

distribution of this somewhat rare and recently discovered species. It

was first met with by Dr. W. W. Anderson, at Fort Burgwyn in New

Mexico, and described by Professor Baird in 1860, in a note to the

explanation of Vol. II. of the Birds of North America. It was named in

honor of Mrs. Virginia Anderson, the wife of its discoverer. An

immature individual of this species was obtained August 15, 1864, by

Dr. Coues, at Fort Whipple, near Prescott, in the Territory of

Arizona. As it bears a close resemblance to the _Helminthophaga

ruficapilla_, it is not improbable that its habits bear a very close

resemblance to those of that species.

In the summer of 1869, Mr. Robert Ridgway was so fortunate as to meet

with the nest and eggs of this bird near Salt Lake, Utah (Smith. Coll.

15,239). This was June 9. The nest was embedded in the deposits of

dead or decaying leaves, on ground covered by dense oak-brush. Its rim

was just even with the surface. It was built on the side of a narrow

ravine at the bottom of which was a small stream. The nest itself is

two inches in depth by three and a half in diameter. It consists of a

loose but intricate interweaving of fine strips of the inner bark of

the mountain mahogany, fine stems of grasses, roots, and mosses, and

is lined with the same with the addition of the fur and hair of the

smaller animals.

The eggs were four in number, and measure .64 by .47 of an inch. They

are of a rounded-ovoid shape, have a white ground with a slightly

roseate tinge, and are profusely spotted with numerous small blotches

and dots of purplish-brown and lilac, forming a crown around the

larger end.

This bird was first observed by Mr. Ridgway among the cedars and pines

of the East Humboldt Mountains, where in July it was quite common. It

was very abundant in the Wahsatch Mountains near Salt Lake City,

throughout the summer chiefly inhabiting the thickets of scrub-oak on

the slopes of the cañons in which they nested, and where they were

daily seen, but where, owing to the thickness of the bushes, they were

with difficulty obtained. He describes its song as almost exactly like

that of _Dendroica æstiva_. The usual note is a soft _pit_, quite

different from the sharp _chip_ of _H. celata_.

Helminthophaga luciæ, COOPER.

A History of North American Birds; Land Birds; Vol. 1 of 3 · 第 213 / 438 题