148 



PACIFIC COAST AVIFAUNA No. 14 



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state, and so far reported only in spring. Recorded as follows: Fort Keogli, 

 common in May (Thorne, 1895, p. 218). Regular migrant in Fergus County, 

 :\Iay 18 and 28, 1908 (Silloway, 1908a, p. 64). Great Falls, average of thi-ee 

 years May 19, earliest May 18, 1892 (Chapman, 1907, ]). !)(i). ("hoteaii, eominou 

 May 22 to 25, 1912 (Saunders. 1914a, p. 141 ). 



286. Dendroica virens ( Gmelin) 

 Black-t[ih()ated Green Warbler 



One seen on the Teton River below Collins, June 4, 1916 (DuBois, MS). 

 While this is a sight record only, the species is easily identified, and 'Sir. DuBois 

 was previously acquainted with it. I expect that sooner or later most of the 

 eastern warblers will be found to occur occasionally in the prairie region of the 

 state in migrations. 



287. Dendroica townsendi (J. K. Townseud) 



TowNsEND Warbler 



A common sumDiei- resident of northwestern Montana, west of the conti- 

 nental divide. This species has been found in the following localities: Columbia 

 Falls (Cooke, 1904a, p. 91); Flathead Lake (Silloway, 1901a, p. 69); Belton 

 (DuBois, MS) ; and Glacier National Park, where I observed it in the summers 

 of 1914 and 1915. It has also been found during migration in extreme eastern 

 .Montana, in Custer County and at Great Falls, as detailed below. 



Migration dates are as follows: Average arrival at Columbia Falls, Ma.y 

 7, earliest May 4, 1897; Great Falls, May 28, 1890 (Cooke, 1904a, p. 90) ; Custer 

 County, May 18, 1894, and IMay 11, 1896 (Cameron, 1908a. p. 50). Fall de- 

 parture: Columbia Falls, August 17, 1895 (Cooke, 1904a, p. 91) ; Belton, August 

 27, 1915 (DuBois, MS). 



The nest has been found twice at Flathead Lake. The first, found July 

 15, 1908, contained five well grow'n young, which were afflicted with i)arasites 

 (Silloway, 1908b, p. 299). The second nest was found June 2, 1906, aqd con- 

 tained five eggs advanced in incubation (Silloway, 190(), j). 110). 



288. Dendroica palmarum palmarum (Gmelin) 



Palm Warbler 

 One recorded in iniiiratioii. Great Falls, Sepleiiiber 18. 1889 (Chaptnaii. 

 1907. p. 112). 



289. Seiurus aurocapillus (Linnaeus) 



Oven-bird 

 A rare summer resident in the jiine hills of extreme southeastei'u .Montana. 

 One male taken July 28, 188S, at Fort Keogh (Thorne, 1895, j). 218) ; .Mih's City, 

 four specimens from May 18 to 81, 1902 (Hedges, coll. I'niv. Montana) ; nesting 

 in the Long Pine Hills, young seen July 20, 1910 (Visher, 1911, p. 15). Wliile 

 this last is published in a list of the birds of Harding County, South Dakota. 



