32 



FIELD KEY. 



B. Throat black. 



a. Length 8.00 inches; breast rose-red, rest of plu- 

 mage black and white; song loud and musical; call- 

 note, peek. . . ROSE-BREASTED GROSBEAK, page 168. 



b. Length 8.00 inches; a conspicuous crest; region 

 about the base of the bill black; rest of the plumage 

 and bill red; song, a clear whistle; resident from 

 New York city southward. . . . CARDINAL, page 94. 



c. Length 5.40 inches; wings and tail banded with 

 orange-red, showing conspicuously in flight; move- 

 ments active; much in the air; tail frequently 

 spread; haunts woodland. . . . REDSTART, page 70. 



2. No red on the under parts. 



A. Length 9.50 inches; black; shoulders red; haunts 

 marshes; migrates in flocks. 



RED-WINGED BLACKBIRD, page 100. 



B. Length 5.25 inches; crown-cap red; chin black; 

 rest of under parts streaked with blackish; feeds on 

 seeds and catkins ..... REDPOLL (im.), page 180. 



C. Length 4.00 inches; under parts whitish; back olive- 

 green; a ruby crown-patch; eye-ring white; move- 

 ments restless, wings flitted nervously; call-note, each; 

 song remarkably loud and musical; 



RUBY-CROWNED KINGLET, page 159. 



. With blue in the plumage. 



A. Length 11.50 inches; a conspicuous crest; upper 

 parts dull blue; under parts whitish; a black patch 

 on the breast .......... BLUE JAY, page 108. 



B. Length 7.00 inches; upper parts bright blue; under 

 parts cinnamon-brown ...... BLUEBIRD, page 41. 



