CERULEAN WARBLER. 185 
from thence, which is about the last of March, and to the 10th of April. 
About the middle or 20th of the same month, they appear in Pennsyl- 
vania, in full dress, as represented in Fig. 80; and after continuing to 
be seen, for a week or ten days, skipping among the high branches 
and tops of the trees, after those larvee that feed on the opening buds, 
they disappear until the next October. Whether they retire to the 
north, or to the high ranges of our mountains to breed, like many 
other of our passengers, is yet uncertain. They are a very numerous 
species, and always associate together in considerable numbers, both 
in spring, winter, and fall. 
This species is five inches and a half long, and eight inches broad ; 
whole back, tail-coverts, and hind head, a fine slate color, streaked 
with black; crown, sides of the breast, and rump, rich yellow; wings 
and tail, black; the former crossed with two bars of white, the three 
exterior feathers of the latter, spotted with white; cheeks and front, 
black; chin, line over and under the eye, white; breast, light slate, 
streaked with black, extending under the wings ; belly and vent, white, 
the latter spotted with black; bill and legs, black. ‘This is the spring 
and summer dress of the male; that of the female of the same season 
differs but little, chiefly in the colors being less vivid, and not so 
strongly marked with a tincture of brownish on the back. 
In the month of October the slate color has changed to a brownish 
olive; the streaks of black are also considerably brown, and the white 
is stained with the same color; the tail-coverts, however, still retain 
their slaty hue; the yellow on the crown and sides of the breast be- 
comes nearly obliterated, Their only note is a kind of chip, occasion- 
ally repeated; their motions are quick, and one can scarcely ever 
observe them at rest. 
Though the form of the bill of this bird obliges me to arrange him 
with the Warblers, yet, in his food and all his motions, he is decidedly 
a Flycatcher. 
On again recurring to the descriptions in Pennant of the “ Yellow 
Rump Warbler,” * “Golden-crowned Warbler,” + and “ Belted War- 
bler,”{ I am persuaded that the whole three have been drawn from 
the present species. ‘ 
—~—_—— 
CERULEAN WARBLER.—SYLVIA COSRULEA. — Fic. 81 
Peale’s Museum, No. 7309. 
SYLVICOLA CQ@RULEA. — Swainson. — Mate. 
Sylvia ‘azurea, Bonap. Synop. p. 85. — Sylvia azurea, Azure Warbler, Steph. © . 
Zool. x. p. 653.—Sylvia coerulea, Cerulean Warbler, Steph. Sh. Zool. x. p 
652. — Sylvia bifasciata, Say, Journ. to Rocky Mount. i. p. 170.— The Azure 
Warbler, Sylvia azurea, Aud, pl. 48, male and female, Orn. Biog. i. p. 255. 
Turs delicate little species is now, for the first time, introduced to 
public notice. Except my friend, Mr. Peale, I know of no other natu- 
= Arctic Bosley, p. 400, No. 188. + Ibid. No. 294. } Ibid. No. 306. 
