\ 



146 PACIFIC COAST AVIFAUNA No. 14 



aiKl orcst(ra, migrating in the eastci-n part and l)r(H'ding in the western (sec 

 Oherholser. 1905, p. 24:5). 



279. Vermivora celata lutescens (Ridgway) 



LuTEsCENT Warbler 

 A migrant in western Montana, probably chiefly, if not entirely, west of the 

 continental divide. This form is reported from Columbia Falls, where five years 

 '^ive an average spring arrival of May 5, the earliest April 30, 1897 (Cooke, 

 1904a, p. 42). A fall date in this same locality is September 12, 1895 (Chapman, 

 1907, p. 88). 



280. Vermivora peregrina (Wilson) 



Tennessee Warbler 

 A rare summer resident of northwestern ^lontana, evidently breeding local- 

 ly. This form was found at Flathead Lake in the summer of 1904, when a male 

 was taken June 29, a female was observed with nesting material July 3, and 

 other males were lieard in song until the end of July (Silloway, 1905a, p. 21). 

 This bird occurs in migration in the eastern part of the state. P^ive were taken 

 at Miles City, May 13 to 21, 1920 (Hedges, MS). 



281. Dendroica aestiva aestiva (Gmelin) 



Yellow Warbler 



An abundant sunnner resident throughout tlie state. Reported by all ol)- 

 s'-rvers, from all parts of the state. Breeds in the [Ipper Sonoran and Transi- 

 tion zones, in the prairie region and in the mountain valleys, and sometimes in 

 the lower mountain canyons. Breeds in cottonwood groves, willow thickets, and 

 similar habitats. 



Arrives in the spring in JMay and leaves in August. Tlio average date of 

 arrival at Great Falls is ^May 16, and the earliest ^lay 11, Ls91. according to 

 Cliapman (1907, p. 115). There is an earlier date of arrival recorded from 

 (j-reat Falls, however, ]\Iay 9, 1887 (Williams, 1888a, p. IH). Other records of 

 spring arrival are: Sedan, Gallatin County, ^fay 19, 1909; German Gulch, Silver 

 P.ow County, IMay 28, 1910; Silver Bow, May 21, 1911 ; Choteau, .May 22, 1912; 

 Bitterroot Valley, ]\ray 27, 1910; :\Iay 21, 1911; and :\lay 18, 1913 (Bailey, MS) ; 

 Dutton. May 26, 1915, and .May 21, 1916 (DuBois, MS). Fall dates are: Great 

 I'^ails, September 13, 1899 (C'hapman, 1907, p. 115) ; Bozeman. August 25, 1908. 

 Logan, Gallatin Country, August 25, 1909; Gold Creek, Powell County, August 

 26, 1910; Choteau, August 18, 1911. 



The nest has b(M'n found and rtH'orded fre(iuently. All records, however, 

 are in -lune and early Jidy. and there is no indication of moic than one brood. 

 The earliest nest is one which T observed at Choteau. It was found with thi-iv' 

 eggs June 11, 1912. Two of the eggs hatched June 21, the third being infertile. 

 The young were full grown and left the nest June 28. The latest record is tha^^ 

 of a young bird just out of the nest July 4, 1912, at Choteau. Other records are 

 all between these two dates. 



