BLACKBURNIAN WARBLER. 73 



flexure 2^ ; tail 2jV ; tarsus |^ ; hind toe ^\ ; its claw ^^ ; middle toe 

 xs, its claw ||. 



Adult Female. Plate CCCXCIX. Fig. 2. 



The Female^ which is somewhat smaller than the male, has the up- 

 per parts similar, with less yeUow on the forehead, the loral space, a 

 band under the eye and the auriculars greenish ; the yellow band over 

 the eye less bright, and the yellow on the sides of the neck of less ex- 

 tent. The fore part of the neck is white, tinged with yellow above, 

 and with grey beneath ; the lower parts are white as in the male, and 

 the sides are streaked with black ; the white markings on the wings 

 and tail, as in the male, but of less extent. 



Length to end of tail 4| inches ; bill along the ridge i| ; wing from 

 flexure 2/| ; tail 2 ; tarsus /| ; hind toe ||, its claw {^ ; middle toe ^^, 

 its claw '||. 



BLACKBURNIAN WARBLER. 



Sylvia blackburnim, Lath. 



PLATE CCCXCIX. Female. 



I HAVE nothing to add to the account given in vol. ii. p. 208, of the 

 habits of this species. It was not observed by either Mr Nuttall or 

 Dr TowNSEND on the Rocky Mountains or on the shores of the Pa- 

 cific Ocean. My young friend Dr Thomas Brewer of Boston, having 

 kindly furnished me with a description of a nest of this Warbler foimd 

 by him, I introduce it here, as illustrative of the difl'erences as to con- 

 struction and materials which these fabrics often exhibit. In a letter, 

 dated October 30. 1837, he says, " 1 had the extreme good fortune to 

 obtain the nest and eggs of this bird the past siunmer. I presume 

 a short account of them will not be amiss, it being extremely rare in 

 this part of the country so far to the south. The nest is rather sloven- 

 ly built of dry grass, leaves, and strips of the bark of the grape-vine 



