ORANGE-CROWNED WARBLER.

_Sylvia celata_, SAY, Long’s Exp. R. Mts. I, 1823, 169.—BON. Am.

Orn. I, pl. v, fig. 2.—AUD. Orn. Biog. II, pl. clxxviii.

_Sylvicola cel._ RICH. _Vermivora cel._ JARD. _Helinaia cel._ AUD.

Birds Am. II, pl. cxii. _Helmitherus cel._ BON.—SCLATER, P. Z. S.

1857, 212 (Orizaba). _Helminthophaga cel._ BAIRD, Birds N. Am.

1858, 257; Rev. Am. Birds, I, 1865, 176 (in part).—DALL &

BANNISTER (Alaska).—SCLATER, P. Z. S. 1858, 298 (Oaxaca,

December); 1859, 373; 1862, 19 (La Parada). _H. celata_, var.

_celata_, RIDGW. Rept. U. S. Geol. Expl. 40th Par.

SP. CHAR. Above grayish olive-green, rather brighter on the rump.

Beneath entirely greenish yellowish-white, except a little whitish

about the anus; the sides tinged with grayish-olivaceous. A concealed

patch of pale orange-rufous on the crown, hidden by the grayish tips

to the feathers. Eyelids and an obscure superciliary line

yellowish-white, a dusky obscure streak through the eye. Inner webs of

tail-feathers broadly edged with white. _Female_ with little or none

of the orange on the crown, and the white edgings to inner webs of

tail-feathers. _Young_ lacking the orange entirely, and with two

fulvous-whitish bands on the wing. Length, 4.70; wing, 2.25; tail,

2.00.

HAB. Middle Province of North America; Yukon and McKenzie River

district. Very rare in the Eastern Province of United States; Mexico

in winter; Oaxaca, La Parada, (SCLATER); Orizaba, winter (SUMICHRAST).

This variety inhabits the interior regions of North America, from the

Yukon southward into Mexico; westward, its range meets that of the

var. _lutescens_ at about the meridian of 116°, while eastward it

extends beyond the Mississippi, though rare east of the latter region.

Specimens from Southern Illinois (where it is abundant in its

migrations) and from Wisconsin are precisely like Rocky Mountain

examples; but several in the collection before us from the South

Atlantic States (Florida, Georgia, etc.) are so different as almost to

warrant their separation as a different variety. These individuals are

most like the style of the interior,—var. _celata_,—but are even less

yellowish, and the whole plumage is very dark and dingy; all of them,

too, lack any trace whatever of orange on the crown. Should all

specimens from this region agree in the latter respect, the series

from the Southeastern States is certainly entitled to recognition as a

variety, for which we propose the name _obscura_.

HABITS. The geographical distribution of _H. celata_ is involved in

some doubt, owing probably to its irregularity of migration. In a few

occasional instances this species has been observed in the Atlantic

States. Several have been obtained near Philadelphia. Mr. Audubon

affirms to having seen it in the Middle States about the 10th of May,

and in Maine later in the month. Beyond that he did not trace it. Mr.

J. A. Allen procured one specimen of this bird in Springfield, Mass.,

May 15, 1863. There were quite a number among the fruit-trees of the

garden and orchard, then in bloom, and, mistaking them for

_Helminthophaga ruficapilla_, he at first neglected to shoot any,

until, being in doubt, he procured one, and found it the Orange-Crown.

The group passed on, and one was all he obtained. It is not given by

Mr. Turnbull as one of the birds of New Jersey and Pennsylvania, nor

by Mr. Boardman or Professor Verrill as occurring in Maine. I am

informed by Mr. Ridgway that it is a regular spring and autumn migrant

in Southern Illinois, and in some seasons is quite common.

It was taken as a migratory species at Oaxaca, Mexico, during the

winter months, by M. A. Boucard.

Mr. Audubon’s account of the habits and movements of this species must

be received with much caution. His description of its nest is entirely

inaccurate, and much that he attributes to this species we have reason

to believe relates to the habits of other birds.

On the Pacific coast it seems to be quite abundant, at different

seasons, from Cape St. Lucas to the arctic regions, where it breeds.

Mr. Kennicott obtained several specimens at Fort Yukon and at Fort

Resolution, and Mr. Boss met with them at Fort Simpson. Xantus

obtained these birds both at Fort Tejon and at Cape St. Lucas. It is

common in Southern California during the winter, frequenting low

bushes and the margins of streams. Dr. Gambel met with it in early

spring on the island of Santa Catalina, where he had an opportunity of

listening to its simple and lively song. This he describes as

commencing in a low, sweet trill, and ending in _tshe-up_. It is

sometimes considerably varied, but is described as generally

resembling _er-r,r,r,r-shè-up_.

Dr. Cooper speaks of this Warbler as an abundant and constant resident

of California, near the coast, and found in summer throughout the

Sierra Nevada. In March they begin to sing their simple trill, which,

he says, is rather musical, and audible for a long distance.

Dr. Coues met with this Warbler in Arizona, at Fort Yuma, September

17, at Fort Mohave, October 1, and also at the head-waters of Bill

Williams River. Lieutenant Couch found it at Brownsville, Tex.,

seeking its food and making its home among the low shrubbery.

Dr. Suckley found it very abundant at Fort Steilacoom, in Washington

Territory, where it kept in shady places among thick brush, generally

in the vicinity of watercourses. Dr. Heermann found a few pairs

incubating near the summits of the highest mountains on the Colorado

River. The nests of this species, seen by Mr. Kennicott, were

uniformly on the ground, generally among clumps of low bushes, often

in the side of a bank, and usually hidden by the dry leaves among

which they were placed. He met with these nests in the middle of June

in the vicinity of Great Slave Lake. They were large for the size of

the bird, having an external diameter of four inches, and a height of

two and a half, and appearing as if made of two or three distinct

fabrics, one within the other, of nearly the same materials. The

external portions of these nests were composed almost entirely of

long, coarse strips of bark loosely interwoven with a few dry grasses

and stems of plants. Within it is a more elaborately interwoven

structure of finer dry grasses and mosses. These are softly and warmly

lined with hair and fur of small animals.

Nests from more arctic regions are of a different style of structure,

homogeneous in materials,—which are chiefly stems of small plants and

the finer grasses,—and are of a more compact make and smaller in size.

Their eggs are from four to six in number, and vary in length from .70

to .60 of an inch, and in breadth from .50 to .45 of an inch. They

have a clear white ground, marked with spots and small blotches of

reddish-brown and fainter marking of purplish-slate. The number of

spots varies greatly, some eggs being nearly unspotted, others

profusely covered.

Mr. Ridgway met with this Warbler in great abundance during its

autumnal migration among the shrubbery along the streams of the Sierra

Nevada, at all altitudes. In summer it was only seen among the high

aspen woods on the Wahsatch Mountains. Fully fledged young birds were

numerous in July and August. Their usual note was a sharp _chip_.

This bird was found breeding near Fort Resolution, on the Yukon, at

Fort Rae, and at Fort Anderson.

The notice of geographical distribution of the different races, at the

beginning of the article, will serve to show to what varieties the

preceding remarks severally belong.

Helminthophaga celata, var. lutescens, RIDGWAY.

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