WARBLERS 515 



659. Dendroica pensylvanica (Linn.). Chestnut -sided 

 Warbler. 



Plumage of adult male : black lines from bill above eyes backward and 

 also from bill down sides of cheek ; crown yellow ; upper parts streaked with 

 black, margined with whitish on back of neck and with yellowish green on 

 back ; wings and tail dull blackish ; primaries narrowly margined on outer 

 webs with whitish, on inner webs visible from below also white margined ; 

 secondaries margined with yellow on outer webs ; the coverts black, tipped 

 with yellow, forming two distinct yellow or yellowish white bars on each 

 wing; outer tail feathers white on inner webs near tips; sides chestnut; 

 sides of head and auriculars whitish ; throat, breast and belly white. Plum- 

 age of female : black on sides of head and throat duller and chestnut stripes 

 on the sides less heavy than in the male, otherwise very similar. Immature 

 plumage : above bright olive yellow, sparingly or not at all streaked with 

 black ; grayish white below ; pearl gray on sides of head, throat, breast and 

 flanks ; only a mere trace of the chestnut on the sides ; otherwise very sim- 

 ilar to adults. Wing 2.50 ; tail 2.00. 



Geog. Dist. — Eastern North America, breeding from central Illinois and 

 northern New Jersey, and in the higher mountains of North and South Car- 

 olina northward to Newfoundland, Ontario and Saskatchewan; wintering 

 from Guatemala to Panama along the coast and in the lower mountains. 



County Records. — Androscoggin; common summer resident, (Johnson) 

 Aroostook; common at Fort Fairfield, (Batchelder, B. N. 0. C. 7, p. 109); 

 very rare in Woolastook Valley, (Knight). Cumberland; common summer 

 resident, (Mead). Franklin; common summer resident, (Swain). Hancock; 

 common, nests, (Mrs. W. H. Gardner). Kennebec ; rare summer resident, 

 (Gardiner Branch). Knox; summer, (Rackliff). Oxford; breeds common, 

 ly, (Nash). Penobscot; common summer resident of southern sections 

 rare northward, (Knight). Piscataquis; common, breeds, (Homer). Saga- 

 dahoc ; rare, two spring specimens, (Spinney). Somerset ; common summer 

 resident, (Morrell); very rare or local in the northern wilds, (Knight). 

 Waldo; common summer resident, (Knight). Washington; not uncommon 

 summer resident, (Boardman). York; quite common, (Adams). 



Sometimes arriving near Bangor as early as May eighth, 

 more frequently from the tenth to the fifteenth, the species 

 occurs here and throughout the State (save locally) as a very 

 common summer resident, though very rare or entirely want- 

 ing in the deep, dense evergreen woods that cover the wilder 

 sections of Maine. In the fall they dwindle away through 

 August and by September eighth the last straggler has usually 

 gone. They arrive in scattered bands of two or three, never 

 in large flocks, and depart singly or by twos and threes. 



