SWALLOWS. 



e. Tree Swallows. Iridoprocne. 



Larger swallows, with medium forked tails; bluish 

 above ; white beneath. 



1. WHITE-BELLIED SWALLOW, I. BICOLOB. 6.00; 

 greenish steel-blue above; white beneath, fig. 348. Female, 



Fig. 348. 



usually dull er . 

 Young, grayish- 

 brown above and in a 

 band across breast. 

 Breeds from Ya. and 

 Cal. northward into 

 British America ; win- 

 ters from S. C. 

 through the Gulf 

 States and occasional- 

 CC, L, e, 1. ly further north ; 



south in Sep. and Oct. ; north in April. Nests in holes of 

 trees, sometimes excavated by the birds, in bird boxes, or 

 about buildings. Flight, easy and rather graceful. Song, a 

 pleasant twitter. Abundant; gregarious in autumn, congre- 

 gating by thousands on the sea shore, 

 f. Green and White Swallows. Cliallichelidon. 

 Differ from e in having larger bills and longer, more 

 deeply forked tails. 



1. BAHAMA SWALLOW, C. OYANEOVIBIDIS. 6.00; 

 velvety-green above with golden iridescence; wing coverts, 

 rump, and tail, steel-blue; white beneath. Female, duller. 

 Kesident on New Providence, Bahamas, and occurs n some 

 other of the Islands ; accidental in Fla. Song, a musical twit- 

 ter. Nests in holes of buildings. 



g. Long-tailed Swallows. Hirundo. 

 Bill, rather small; tail, long, and forked for more than 

 one third its length. 



