590 BULLETIN UNI'l'ED STATES GEOLOGICAL SURVEY. 



List of specimens — Continued. 



SPIZELLA MONTICOLA, {Gm.) Beard. 



Tree Spaerow. 



No Tree Sparrows were observed in summer during either season, and 

 I think none breed so far south as this. They appear in numbers with 

 the general migration which brings the northern Fringillines, and whicli 

 reaches this latitude about the 1st of October. Unlike several of the 

 other species, however, they are not generally distributed, being con- 

 fined to the woods, or rather the shrubbery along the streams, where 

 they may be observed in small troops in company with the Snowbirds, 

 and Harris's, Lincoln's, and White-crowned Sparrows. They are hardy 

 birds, capable of enduring great cold, and I suppose that they may pass 

 the winter in this latitude, as they certainly do a little distance south- 

 ward in the Missouri region. I found them in considerable numbers 

 at Fort Eandall, Dak., during the winter of 1872-73, which they passed, 

 to all appearances, very comfortably in the heavy undergrowth of the 



river-bottom. 



List of specimens. 



