\ 



140 PACIFIC COAST AVIFAUNA No. 14 



at Groat Falls with the Tree Swallow about -May 1 (Williams. 1888a, p. It]). 

 Dates of arrival at other points are: Fridley, Park County, .May 14, 1!J(J9; Big 

 Hole River, Silver Bow County, May 6, 1910; Anaconda, May 12, 1911. Dates 

 of departure are: Eight Mih' Creek. Park County, August 24, 1908; Jefferson 

 River, August 25, 1909. 



There are no records of the securing of eggs in tiie state. 1 watched the 

 birds nest-building on the Boulder River, Jefferson County, June B. 1911, ;ind 

 s'cured young able to fly on the Pend-Oreille River near Poison, July 23, 1914 

 (1915b, p. 114). In the Bitterroot Valley it is stated to nest in l)ird-houses. 

 though less commonly than the Tree Swallow (Bailey, MS). 



264. Riparia riparia (Linnaeus) 



Bank Swallow 



A summer resident throughout the state, locally common or abundant. Re 

 ported from nearly all localities, in some places as rare and in others as abund- 

 ant. Breeds in the Transition and Upper Sonoran zones in clay banks of rivers. 

 Where found, the nests are liable to be in large colonies. 



The migrations take place in May and August. Three years at Bozemau 

 give an average of May 15, with the earliest date May 7, 1912 (Oberholsev, 

 1917, p. 327). Another date is from Choteau, .May 26, 1912. Fall dates aie: 

 Uozeman, August 28, 1912 (Oberholser, 1917, p. 328) : Eight Mile Creek, Park 

 County, August 24, 1908. 



There are no records of the taking of eggs in the state. Young, not fledged 

 were found on Great Porcupine Creek, August 10, 1873, and fledged young on 

 the Yellowstone near Custer Creek, August 1, 1873 (Allen, 1874, p. 54). I dug 

 out several nests in Teton County early in June, 1912, but found none that bad 

 been completed at that date. 



265. Stelgidopteryx serripennis (Audubon) 



Rough-winged Swallow 



A summer resident evidently throughout the state, l)ut records in the east- 

 ern half are not numerous, and the bird is omitted from many lists in r!ie west- 

 ern half. Explicit records are as follows: Gallatin Coujity, one young liird tn!.en 

 at Hillsdale, August 22, 1888 (Richmond and Knowlton, 1894, p. 30S ) ; Miles 

 City, I\ray 30, 1902 (Hedges, coll. l^niv. Montana) ; Kb^thead Lake, Ix^twcen 

 August 22 and 30, 1897 (Elrod, coll. I'niv. Montana) ; (JaUatii) County, common 

 summer resident (Saunders, 1911a, p. 45) : soutliwestei-n Montana (Deer Lodge, 

 Jefferson, Silver Bow and southern Powell counties), sunnner residenl (Saun- 

 ders, 1912a, p. 30) ; Teton County, summer resident (Saunders, 1914a, p. 140) : 

 Pend-Oreille River, Flathead Lake (Saunders, l!)!.")!). p. 113*: Uelton. suiumer 

 of 1915, seen up to August 8 (DuBois, .MS). I hii\'(' iilso seen this species in 

 Park County. 



Migration dates aiv as follows: .Missoula, average oi two years .Xpnl 27. 

 earliest April 25, 1915 i^Oberiiolser. 1917, p. 329) : Gre-son. Silvc<- liow County, 

 iMay 30, !!)](); Silver Bow, May 21, 1911; Cboteau, .May 22. r.):2. Fall dates 



