92 
NEW-YORJK FAUNA-BIRDS. 
THE BLUE-GREY WARBLER 
Sylvicola cairulea. 
PLATE XLVllI. FIG. 107. 
Sylvia car idea. Wilson, Am, Orn, Vol. 2, p. 141,pi. 17, fig. 5 (male) , and 8. vara, Vol. 3, p. 119, pi. 27, fig 
2 (young). 
3, rara et azurea. Bonaparte, Ann. Lyc. N. Y. Vol. 2, pp. 82 and 85. Ip. Am. Ornith. Vol. 2, p. 27, pi. ll r 
fig. 2 (female). 
Muscicapa ccerulea. Audubon, folio, pi. 48 (adult). S. rara, pi. 49, (young) ; Orn.Biog. Vol. 1, pp. 255 and 258, 
and Vol. 5, p. 456. 
Sylvicola cccrulea. Bonaparte, Comp. List, p. 23. Audubon,- B. of A. Vol. 2, p. 45; pi. 86 (males). 
Characteristics. Blue. Wings bifasciate with white. Tail with a white spot on the inner 
webs near the tip. Length, 4^ inches. 
Description. Three outer quills subequal; the first and second longest. Tail slightly 
einarginate. 
Color. Above light verdiler-blue, with a few dark streaks on the back. Frontlet and lores 
black, extending to behind the eyes : a light streak over the eyes. Primaries black, mar¬ 
gined with pale blue. Beneath white, with an obscure collar of dusky streaks over the 
breast. Female, the blue above tinged with green. Stripe over the eye and all beneath 
yellowish white ; the white on the tail obscure. 
Length, 4 - 5. Alar extent, 8‘0. 
This little bird is exceedingly rare in the middle States, and I have never seen it in New- 
York. As it has been observed near Philadelphia and in Nova-Scolia, it will doubtless be 
found here, although it seems rather to prefer the eastern parts of the comment. It reaches 
Louisiana from Mexico in the spring, and breeds there, returning in October. 
