230 



SWIFTS 



GENUS CHiETURA. 



General Characters. — Tail less than half as long as wing-, rounded or 

 even, the feathers usually with distinct spines ; wing less than 5.50 ; tar- 

 sus and toes naked, hind toe directed backward. 



KEY TO SPECIES. 



1. Wing 5 or more. Eastern pelagica, p. 230. 



r. Wing decidedly less than 5. Pacific to Sierra Nevada. 



vauxii, p. 231. 



423. Chsetura pelagica (Linn.). Chimney Swift. 



Sooty gray, the throat paler. Length : 4.75-5.50, wing 5.00-5.25, tail, 

 including spines, 1 .90-2. 1 5. 



