102 NEW- YORK FAUNA — BIRDS. 



THE CHESNUT-SIDED WARBLER. 



Sylvicola icterocephala. 



PLATE L1X. FIG. 134 (Male). 



(STATE COLLECTION.) 



Motacilla icterocephala et pemylvanica. LlNNJStJS, Syst. pp. 333 and 334. 

 Bloody-side Warbler. Pennant, Arct. Zool. Vol. 2, p. 405. Vieillot, pi. 90. 

 S. pensyhanica. Wilson, Am. Orn. Vol. 2, p. 99, pi. 14, fig. 5. 



S. icterocephala. Bonaparte, Ann. Lye. Vol. 2, p. 80. Audubon, folio, pi. 59 ; Orn. Biog. Vol. 1, p. 306. 

 Chesnul-sided Warbler. Nuttall, Man. Ornith. Vol. 1, p. 380. 



Chesnutsided Wood-icarbler. Audubon, Birds of Am. Vol. 2, p. 32, pi. 81 (male and female). Giraud, Birds 

 of Long island, p. 63. 



Characteristics. Crown yellow. Sides, from the bill, chesnut. Wings bifasciate with pale 

 yellow. Beneath white. Female and young : Crown greenish yellow ; 

 sides pale rufous, sometimes scarcely apparent. Length, 5 inches. 



Description. Bill short, rather straight, with porrect bristles at the base, extending beyond 

 the nostrils. Tail slightly emarginate, extending - 7 beyond the tips of the closed wings. 

 Second quill longest ; the second, third and fourth quills sinuated on the outer webs towards 

 the tips. 



Color. Greenish and slate streaked with black. Wings and tail brown. Two or three 

 outer tail-feathers white on their inner webs. First and second row of coverts broadly tipped 

 with yellow. Secondaries greenish yellow on their outer vanes. Crown bright lemon-yellow. 

 From the angle of the mouth, a distinct black line goes over the eye ; and from the same 

 place, another somewhat curved benealh the eye, and leaving posterior to the eye a white 

 spot. Female and young : Wing-coverts not so distinctly tipped with yellow ; the black 

 lines surrounding the eye obsolete. Sides with indistinct chesnut. Yellow crown tinged 

 with green. 



Length, 4-5-5"0. Alar extent, 7-5-8-0. 



This rare Warbler I observed first in the western part of this State on the 20th of May, 

 although it probably reaches the southern portions earlier. The young were obtained a few 

 miles above the city, near the Hudson, August 20. It winters in Mexico, and does not 

 appear to advance much farther north than Massachusetts. Feeds on flies and other insects. 



