220 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
General plumage, black, glossed on the head with purplish or violet black, and 
back and underparts, tinged with metallic green; no red on shoulder. 
Brewer’s Blackbird. 
Scolecophagus cyanocephalus (male). 
See No. 382. 
General plumage, black, tinged with brown on the crown and back; the 
feathers on the underparts, tipped with rusty brown; underparts, not streaked ; 
no red on shoulder. 
Rusty Blackbird. 
Scolecophagus carolinus (immature), 
See No. 381. 
General plumage, black, more or less streaked and marked with brown, 
buff, and dull white; lesser wing coverts (shoulder), dull red. 
Red-winged Blackbird. 
Agelaius pheniceus (young male). 
See No. 373. 
Underparts, streaked with black; no 
red patch on shoulder. 
Red-winged Blackbird. 
Agelauius pheniceus ( female), and races 
See No. 373. 
Head and breast, chocolate brown; resi of plumage, glossy black. 
Cow Bird. 
Molothrus ater (matle.,. 
See No. 371. 
