56 The Birds of Albany County 



Black-poll Warbler. — Dendroka striata. 5.57 



Uncommon Migrant 



Field marks. — Crown black; auriculars white; two white 

 wing-bars; rest of plumage white, gray, and black, 

 streaked. 



Although the Black-poll is supposed to be a common 

 migrant through the Hudson Valley I have seen but very few. 



Bay-breasted Warbler. — Dendroka castanea. 5.64 



Uncommon Migremt 



Field marks. — Crown, diroat, breast, and sides chestnut; back 

 streaked with black; two white wing-bars. 



Migrates late in May. Some years none is seen. 



Chestnut-sided Warbler. — Dendroka pem^lvanka. 



5.14 



Very Conmion Summer Resident 



Field marks. — Bright chestnut stripe on sides; crown yellow; 

 back greenish, streaked with black; under parts pure 

 white. 



In the northward migrating season this bird is die most 

 numerous of its family. In the wooded slopes along the 

 Normanskill, at Kenwood, about the middle of May, I have 

 observed hundreds of the Chestnut-sides flitting from branch 

 to branch, along with other more rare travelers. But in early 



