THE BIRDS OF -NEW JERSEY. 277 



658 Dendroica cserulea (Wilson). 

 Cerulean Warbler. 



Adult male. Length, 4-5. Wing, 2.50. Above, grayish cerulean blue, back 

 streaked with black and rump feathers with black bases, wings with two white 

 bars, tail with white subterminal spots on all but the center pair of feathers ; 

 ear-coverts, grayish ; under parts, white, streaked on the sides with black, 

 strongly tinged with grayish-blue ; a band of the same color across the chest. 



Adult female. Grayish olive-green above, brighter, often bluish, on the head, 

 no streaks ; under parts, white, tinged with pale yellow, and a superciliary 

 stripe of the same. 



Young in first autumn. Similar to adult female, but more streaked on the 

 sides. 



Very rare straggler during migration. 



The only New Jersey records of the Cerulean Warbler are one 

 killed by Dr. C. C. Abbott, near Trenton, 1 and one secured at Boon- 

 ton, Morris county, September 1st, 1887, by S. D. Judd. 2 



659 Dendroica pensylvanica (Linnaeus). 

 Chestnut-sided Warbler. 



Adult male. Length, 4.75-5.25. Wing, 2.50. Above, heavily streaked with 

 black on a whitish or olive ground ; whole top of head, yellow ; two pale yel- 

 lowish bands on the wings, three outer tail feathers largely white on the inner 

 webs ; sides of face, black ; ear-coverts and sides of neck, white ; under parts, 

 pure white, a rich chestnut stripe running from the black at the base of the 

 bill to the flanks. In autumn entirely different, bright yellow-olive above with 

 concealed black centers to the feathers of the back ; below, pure white, except 

 a wash of chestnut on the flanks. 



Adult female. Similar to male, but duller ; crown, greenish and chestnut, 

 stripes not so extensive. 



Young in first autumn. Duller than the adult male in autumn, no stripes 

 above and no chestnut on the flanks. 



Nest in low bushes, similar to that of the Yellow Warbler ; eggs, four to five, 

 white, speckled with brown or gray, .65 x .50. 



Common transient visitant in the southern half of the State, and 

 summer resident in the northern counties. Spring, May 5th to 15th; 

 autumn, August 15th to September 25th. 



1 Birds of New Jersey, 1868. 



2 Auk, 1897, p. 326. 



