KEY TO WARBLERS 345 



II. No Bright Yellow, Orange, or Salmon in Plu- 

 mage. 



1. Top of head and whole of back uniform dark slate- 

 blue. Throat and sides of breast black ; rest of under 

 parts white ; conspicuous white spot on wing. Female 

 olive above, dull yellowish below. 



p. 312. Black-throated Blue Warbler. 



1'. Top of head and back not blue. 

 2. Plumage mainly black and white. 



3. Cap black, rest of body streaked black and white. 



p. 321. Black-poll Warbler. 



3'. Cap not black ; whole body streaked black and white. 

 Seen on tree trunks. 

 p. 314. Black and White Creeping Warbler. 



2'. Plumage mainly brownish. 



4. Under parts not streaked. 



Head with four black stripes; back olive-green. Found 



in dense woodland. Song suggests Chipping Sparrow. 



p. 337. Worm-eating Warbler. 



4'. Under parts streaked. 

 5. Crown dull orange, inclosed by two black lines. 

 Found walking in dry woodland. Song, a loud cres- 

 cendo, teacher, teacher, teacher, or teach, teach, teach. 



p. 333. Oven-bird. 



5'. Crown olive-brown, like back. Found by water. 

 6. Throat as well as breast streaked. A northern bird. 

 p. 335. Water-Thrush. 



6'. Throat not streaked. A southern bird, coming north 

 to southern New England. 



p. 33G. Louisiana Water-Thrush, 



