22 BIRDS OP NELSOI^ COUNTY. 



Family HIRUNDINID^: Swallows. 

 Genus Progne. 



65. *PTOgne subis (Linn.). Purple Martin. 



A common summer resident ; arrives about March 20th ; 

 sometimes as early as the 10th. A general favorite, breed- 

 ing here, as elsewhere, in boxes put up for their accom- 

 modation, which sometimes occasion a triangular fight 

 between this bird, the Blue-bird and the English Sparrow. 

 In one three- or four-days battle, which I witnessed, the 

 Blue-birds came oflf victorious. 



Genus Petrochelidon. 



66. * Petrochelidon lunifrons (Say). Cliff Swallow. 



A rather common summer resident. I have never seen 



their nests. 



Genus Chelidon. 



67. *Chehdon eryibrogastra (Bodd.). Barn Swallow. 



An abundant summer resident ; arrives about April 20th. 

 These swallows do not appear to be nearly as common 

 about here as they were ten or fifteen years ago. Boys 

 destroy a great many of their nests, in the barns and other 

 out-buildings, which has doubtless had a very appreciable 

 eflEect upon their numbers. 



Genus Clivicola. 



68. j-CIivicoIa riparia (Linn.). Bank Swallow. " Sand 



Martin." 



A common summer resident. 



Genus Stelgidopteryx. 



69. * Stelgidopteryx serripennis ( Aud.). Rough-winged Swal- 



low. 



