SYLVICOLIDH, WARBLERS.—GEN. 35. 99 
dull olive-greenish, with faint bluish shade, below pale soiled yellowish ; but 
recognizable by the white spot at base of primaries, which, though it may 
be reduced to a mere speck, is always evident, at least on pushing aside the 
primary coverts; no other wing markings; tail-blotches small or obscure ; 
feet rather pale. Size of virens. Eastern United States, abundant, in 
woodland. S. pusilla, Wits., v, 100, pl. 43, f. 4; S. sphagnosa, Nutr., 
i, 406; Aup., Orn. Biog. ii, 279, are g or young. SS. canadensis, WILS., 
five, ple 15, f..7; Nurr:, i, 398; Aup., ii, 63, 95; Bo., 271. “S. ceru- 
Wesens Mil aweverlkoOs.s se ws 6 oa) ee lO OS. i “OMRULESOENS: 
Ozs. The only other warbler with a white spot at base of primaries is the D. 
olivacea of Mexico, and ascribed also to Texas; it is olivaceous, the head, neck 
and breast orange-brown, with a black bar through the eye. Cass., Ill. 283, pl. 48 ; 
Bo., Rev. 205. 
Cerulean Warbler. g in spring: azure blue, with black streaks ; below, 
pure white, breast and sides with blue or blue-black streaks; two white 
wing-bars ; tail-blotches small, but occupying every feather, except, perhaps, 
the central pair; bill black, fect dark. @ and young with the blue impure, 
strongly glossed with greenish, and the white similarly soiled with yellow- 
ish; a yellowish eye-ring and superciliary line. Eastern United States, not 
common in most places; north to Connecticut Valley ; “ Nova Scotia.” A 
small and very beautiful species; 4-44. Sylvia rara, Wi1s., iii, 119, pl. 
27, f. 2; Nurr., i, 393. S. azurea, Nutt., i, 407; S. cerulea, Wits., il, 
141, pl. 17, f. 5; Aup., ii, 45, pl. 86; Bp., 280. See ke Can RUM EAY 
Yellow-rumped Warbler. Yellow-crowned Warbler. Myrtle Bird. 2, 
in spring: slaty-blue, streaked with black; below, white, breast and sides 
mostly black, belly, and especially the throat, pure white, immaculate ; 
rump, central crown patch, and sides of breast sharply yellow, there being 
thus four definite yellow places; sides of head black; eyelids and super- 
ciliary line white ; ordinary white wing-bars and tail-blotches ; bill and feet 
black; ¢ in winter, and ¢@ in summer, similar, 
but slate color less pure, or quite brownish; young , 
birds are quite brown above, with a few obscure 
streaks in the whitish of the under parts. It is im- 
possible to specify the endless intermediate styles; 
but I never saw a specimen without the yellow 
rump, and at least a trace of the other yellow 
marks ; these points therefore are diagnostic. The 
only other obscure-looking brownish warblers with 
yellow rump are maculosa and tigrina, when young. One of the larger 
species; 53-52; wing 3, tail 24. North America, but chiefly eastern ; 
Alaska (Dall) ; Washington Territory (Suckley) ; California (Cooper, 89). 
United States rarely in summer, but during the migrations the most abun- 
dant of all the warblers; winters as far north at least as Washington, 
D.C. ; oceurs, however, in Mexico and Central America; seen everywhere, 
but is particularly numerous in shrubbery, along hedge-rows, in flocks, 
Fig. 41. Yellow-rumped Warbler. 
