192 BAY-BREASTED WARBLER 



Compton County, Quebec, Ottawa Naturalist, XVIII, 1904, 152. (5) A 

 DuGMOKE, The Increase of the Chestnut-sided Warbler, Bird-Lore, IV, 

 77. (6) Wm. Bkewster, Birds of the Cambridge Region, 336. (7) F 

 Herrick, Home Life of Wild Birds, Rev. Ed., 1905, 189, 222, 236 ,240. 



Bay-breasted Warbler 



DENDROICA CASTANEA (Wils.) Plate XII 



Distinguishing Characters. — The adult S in Spring may be known b; 

 chestnut crown, breast, and sides, black face, and buffy spot at the sid 

 the neck; the adult 2 in Spring by more or less chestnut in crown, on br 

 and sides, a grayish back streaked with black. Fall adults show more or 

 chestnut on the sides but young of both sexes are singularly like the youn 

 Dendroica striata, which see. Length (skin), 5.00; wing, 2.90; tail, 2.10; 

 .40. 



Adult <J, Spring. — Crown chestnut, forehead, lores, and cheeks black, a I 

 buffy space on the side of the neck sometimes spreading to the nape; 

 grayish buff streaked with black; rump grayer; tail margined with gray, 

 outer two to three feathers with white patches at the end of the inner 1 

 wings margined with olive-gray; the greater and median coverts bro 

 tipped with white; throat, upper breast, and sides chestnut; rest of underj 

 buffy white. 



Adult 3, Fall. — Upperparts olive-green more or less streaked with b 

 the crown usually with some concealed chestnut; tail and wings as in Sf 

 but coverts tinged with yellowish ; underparts whitish the throat tinged 

 yellowish, the breast, belly, and under tail-coverts with buffy; sides with i 

 or less chestnut. 



Young S, Fall. — Similar to adult c? in Fall but with no chestnut in cr 

 upperparts less streaked, little or no chestnut on sides; buff suffusion weak 



Adult $, Spring. — Similar to adult c? in Spring but chestnut of crown m 

 with black; forehead and cheeks gray and black; chestnut on throat and 

 much fainter or appearing in patches only. 



Adult ?, Fall. — Resembling adult c? in Fall. 



Young 5j Fall — Resembling young c? in Fall, but without trace of ches 



Nestling. — Above grayish olive, the head sometiities paler, nearly buffy, 

 heavily spotted with wedge-shaped black marks; below whitish thickly spi 

 with rounded black marks; median wing-coverts J)roadly tipped with whit 

 buffy white on both webs, the greater coverts, on only the outer web. 



General Distribution. — Eastern North America; north to N 

 foundland and Hudson Bay; west to a Httle beyond the Mississ 

 River. 



Summer Range. — Northern New England; New Hamps 

 (White Mountains, Lake Umbagog), Maine (Franklin, Penobi 

 and Washington Counties), northern Ontario and, probably, nortl 

 Minnesota, north to Newfoundland, Hudson Bay and Saskatchei 



Winter Range. — Panama and Colombia. 



Spring Migration. — On the way to its summer home, the 



