'584 



BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



ground, siu^^ing- most heartily — " sliding down the scale of their own 

 music," as some one has happily expressed it in the case of another 

 species of similar habit. This song, I think, is superior to that of the 

 Chestnut-collared Bunting, though of the same general character. 

 When hovering in the manner just indicated, both birds resemble 

 butterflies, — there is something so light, wayward, and flickering in their 



motions. 



List of s])ecimens. 



