266 DWIGHT 



is merely tinged with yellow and streaked on crown, back, sides 

 of chin, throat, and sides with black. The black cap and broad 

 streaking of the male are never acquired. 



Dendroica blackburnise (Gmel.). Blackburnian Warbler 



1. Natal Down. Sepia-brown. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, dark sepia-brown obscurely streaked on the back with clove-brown. Wings 

 and tail clove-brown edged with olive-buff, the tertiaries and coverts with white 

 forming two wing bands at tips of greater and median coverts ; the outer three 

 rectrices largely white. Below, white, washed with wood brown or buff on 

 breast and sides, spotted, except on chin, abdomen and crissum, with dull 

 sepia. Superciliary stripe cream-buff, spot on upper and under eyelid white ; 

 lores and auriculars dusky. Bill and feet pinkish buff, becoming dusky later. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult, beginning early in August in eastern Canada, which in- 

 volves the body plumage and wing coverts, but not the rest of 

 the wings nor the tail. 



Unlike the previous plumage. Above, deep yellowish olive-gray, flecked on the 

 crown and streaked on the back with black ; obscure median crown stripe 

 straw-yellow ; rump and upper tail coverts black, edged with olive gray. 

 Wing coverts clove-brown edged with olive-gray and tipped with white forming 

 two broad wing bands. Below, straw-yellow brightening to orange-tinged 

 lemon on the throat, fading to buffy white on the crissum and narrowly streaked 

 on the sides with black veiled by yellow edgings. Superciliary stripe and 

 postauricular region lemon-yellow orange-tinged. Auriculars, rictal streak and 

 transocular stripe olive-gray mixed with black. Suborbital spot yellowish 

 white. 



4. First Nuptial Plumage acquired by a partial prenuptial 

 moult which involves most of the body plumage (except posteri- 

 orly), the wing coverts and sometimes the tertiaries but not the 

 rest of the wings nor the tail. The full orange and black plum- 

 age-is assumed, young and old becoming practically indistinguish- 

 able, the orange throat equally intense in both, the wings and tail 

 usually browner in the young bird and the primary coverts a key 

 to age. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult in July. Differs little from the first winter dress, 

 but the yellow more distinctly orange, the transocular and rictal 



