27 



ii. Crown not black. 



Cheeks more or less black, which is con- 

 tinued as streaks, like a necklace along 

 the sides of neck and across throat, 



Canadian Warbler. 

 Forehead and sides of head black, bordered 

 posteriorly with ashy ; no black beneath, 

 Male Maryland Yellow throat. 

 Crown ash ; sides of head black ; rump yel- 

 low, breast and sides heavily streaked with 

 black. Magnolia Warbler. 



hh. No conspicuous black markings, 

 i. Upper parts ashy-blue with a patch of green- 

 ish or brownish-yellow in middle of back ; 

 two white bars on wing ; some white on 

 tail ; belly white, Parula Warbler. 



ii. Upper parts olive green, greenish-yellow or 

 bright yellow, without sharp contrasts. 

 j. Whole head golden yellow. 



Bill large, h inch long ; tail feathers with 

 much white, Prothonotary Wakbler. 

 Bill not large ; no white on tail. 



Yellow Warbler. 



jj. Yellow of throat contrasted with the color 



of head. 



Head ashy ; no white ou wings or tail ; 



length 4i inches, Nashville Warbler. 



Crown chestnut ; beneath with brownish 



red streaks ; conspicuous white spots on 



tail, Yellow Red-poll Warbler. 



No noticeable contrasts in color ; wing bars 



and blotches on tail, white 



Male Pine Warbler. 



