xlv: 



FIELD COLOR KEY 



T. Top of head same color as back. 

 8. Head and back bluish slate ; breast pinkish. 

 Outer tail feathers, only, showing grayish white 

 in flight . . . .p. 78. Passenger Pigeon. 



8'. Head and back brownish ; under parts whitish. 

 9. Lower half of bill yellow ; outer tail feathers 

 black, broadly tipped with -^ 

 white ; wings largely ru- 

 fous ; ring around eye yellow. 



p. 160. Yellow-billed Cuckoo. 



9'. Lower half of bill black ; outer tail feathers 

 brown, very narrowly 

 tipped wath white ; wings 

 without rufous ; ring 

 around eye red. p. 163. Black-billed Cuckoo. 



2'. No ichite patches on ivings, tail, or 

 rump. 

 10. Form slender ; tail long ; upper 

 parts rich reddish brown ; under 

 parts white, heavily streaked 

 with black. Song long and 

 varied p. 177. Brow'n Thrasher. 



10'. Form stout, hen-like ; tail not long ; body covered 

 witli markings. 



11. Neck with conspicuous black 

 ruff ; end of tail barred, 

 p. 32. Ruffed Grouse. 



11'. Neck with- ' 

 out ruff ; 

 end of tail 

 not barred, 

 p. 37. Bob-white ; Quail. 



Ruffed Grouse. 



