220 FIELD MUSEUM OF NATURAL HISTORY -ZOOLOGY, VOL. IX. 



Under parts, white ; breast, usually more or less tinged with pale 

 brown in winter; greater part of outer tail feathers, white; back 

 and crown, rusty brown, a large part of the wings white, very con- 

 spicuous when flying. Plectrophenax nivalis. 



Snowflake. Snow Bunting. 



See No. 244. 



Head, chocolate brown; rest of plumage, greenish black (male); 

 general plumage, gray, palest on the throat; no white on wing coverts; 

 crown and rump, like back (female). (This species belongs in 

 Section 10, under Family Icteridae, but might be looked for under 

 this family by mistake.) Molothrus ater. 



. Cowbird. 



See No. 224. 



Family TANGARID^. Tanagers. 



Bill, somewhat fringilline, but having a small 

 "tooth" near the middle of the edge of upper mandible; 

 primaries, 9 ; tarsus, scutellate ; males, bright colored. 



GROUP 1. Wing, 3.25 to 4.25 inches long. 



PART 1. The following species have more or less of either red, blue, 

 yellow, or green on the under parts: 



Louisiana Tanager. 



