ROUGH-WIXGED SWALLOW 



141 



harbors. The Bank Swallow occurs over lakes and streams 

 near steep banks of sand. The other three — the White- 

 bellied Swallow, the Eave Swallow, and the Purple Mar- 

 tin — are more or less local, and may be wholly absent from 

 any given locality. Where the Eave Swallow occurs at all, 

 it is generally found in large colonies. The White-bellied 

 Swallow is common in the Maine wilderness, nesting in dead 

 trees, and is an abundant migrant along the salt marshes and 

 where bay berries abound, hovering over the marshes by day, 

 and gathering at night in enormous flocks. 



Rough-wixged Swallow. Stelgidopteryx serripennis 

 5.75 



Ad. — Upper parts dark brown; throat and breast broivnish- 

 gray ; belly white. Im. — Similar to adult, but wings tinged with 

 cinnamon. 



Nest, in holes in sand banks, or in a crevice of masonry or a 

 ledge of rock. 



The Rough-winged Swallow is a summer resident of the 

 lower Hudson Valley, locally common at Riverdale, Hast- 



ings, 



and Sing Si 



it occurs 



here and there in northern New 

 Jersey, and in southwestern 

 Connecticut as far north as Hart- 

 ford. Erom the rest of Xew 

 England it is apparently absent, 

 though a pair has bred for many 

 years in a limestone quarry at 

 North Adams, Mass. It arrives 



Fig. 31. Rough-winged 

 Swallow 



in April and leaves in August. 



The Rough-winged Swallow 

 often breeds in banks with Bank Swallows, and can then 

 hardly be distinguished from the Bank Swallow except by 

 a trained observer ; the upper parts are very similar, but 

 the throat of the Rough-wing is darker, and the middle of 



