81 



thickly marked with brown and black. Nest built of mud, hay 

 and feathers, on rafters in barns. Eggs laid fromMay to July, 

 Feeds on insects. Beneficial. Note, a constant twitter. 



130. Tachycineta bicolor (Vieill.). 

 WHITE-BELLIED SWALLOW. 



Above, dark lustrous green or blue; beneatb ■white. Length, 6 inches. 



Common summer resident. Earliest arrival, April 10 ; departs 

 in September. Raises 1 or 2 broods. Eggs 3-5, white. Nest 

 of hay, mud, and hair or feathers, on beams or in bird-houses. 

 Eggs laid May to July. Feeds on insects. Beneficial. Note 

 like other swallows, but much less frequently uttered. 



131. Clivicola riparia (Linn.). 

 BANK SWALLOW. 



Above and band across breast, mouse-brown; beneath, white. Lengthy 

 6 inches. 



Common summer resident. Earliest arrival, May 2 ; departs 

 late in August. Raises 2 broods. Eggs 3-6, white. Nest of 

 feathers, at end of a tunnel excavated by the birds in a sand 

 bank. Eggs laid in June and July. Feeds on insects. Ben- 

 eficial. Note, weaker and less frequent than those of other 

 swallows. 



132. Stelgidopteryx serripennis (Aud.). 



ROUGH-WINGED SWALLOW. 



Brownish-gray, whitening on under tail coverts. Length, SJ inches. 



Very rare. One instance. Easthampton, May, 1851. W. 

 S. Clark. Now in the collection of Amherst birds in the 

 Amherst college museum. 

 7 



