PASSERES SYLVICOLIDAE DENDROICA AUDUBONI. 



195 



ous trees and bushes bordering the streams of the plains. Though generally 

 silent during the migrations, the males, when settled for the summer, are 

 quite musical. In the latter season, we find them restricted to the mountains, 

 usually at an altitude of from 8,000 to 10,000 feet, where, in the wilderness 

 of pines and low aspens, they raise their young." 



In Arizona, the species is probably resident, breeding at least as far 

 south as Mount Graham. The young, just beginning to assume the plumage 

 of the adult, were found here August 1 ; and farther north, in the White 

 Mountains, young just from the nest were taken July 12. In both localities, 

 they were quite as common as in Southern Colorado. 



