230 



SWIFTS 



GENUS CH^ETURA. 



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

 even, the feathers usually with distinct spines ; wing 1 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. 



1 . Wing- decidedly less than 5. Pacific to Sierra Nevada. 



vauxii, p. 231. 



423. ChSBtura pelagica (Linn.). CHIMNEY SWIFT. 



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

 including spines, 1.90-2.15. 



Fig. '_".><;. 



