1921 BIRDS OF MONTANA 141 



are: Missoula, August 28, 1915 (Oberholser, 1917, p. -.yM)) ; Eight Mile Creek, 

 Park County, August 2-1, 1908; Silver Bow, August 25, 1909; Gold Creek, Powell 

 Coanty, August 16, 1910. 



I believe that this species has been pretty generally overlooked by most ob- 

 servers and mistaken for the Bank Swallow, and that it really is commoner than 

 the Bank Swallow and fully as widely distributed in the state. It occurs at 

 somewhat higher elevations, nesting in banks, in old burrows of tJie Kingfisher, 

 or in burrows of its own. I have found a few pairs nesting with a colony of 

 Bank Swallows, but the Rough-winged Swallow is more liable to nest singly or 

 in colonies of only a few pairs. 1 have never opened a nest and know of no date 

 for eggs in the state. Young of the year have been noted and secured at Flat- 

 head Lake in August, 1897, and on July 23, 1914, and in Gallatin Coanty, August 

 22, 1888. 



266. Bombycilla gamila (Linnaeus) 



Bohemian Waxwing 



An abundant winter visitor throughout the state. Reported by all observers 

 who have done work in winter months. Occurs in mountain valleys, on the 

 prairies, and in the mountains. Comes into towns in large flocks, w^here it feeds 

 on berries of the mountain ash. Occurs rarely in summer in mountains of north- 

 western Montana, and probably breeds there. 



The migrations take place in October and in March or April. Dates of fall 

 arrival are as follows : Rock Creek, Park County, October 27, 1908 ; i\lill Creek, 

 Deer Lodge County, at 9,000 feet, September 14, 1909 ; Warm Springs Creek, 

 Deer Lodge County, October 13, 1910; Lewistown, October 29, 1898 (Silloway, 

 1903a, p. 60); Kalispell, October 28, 1917 (Sloanaker, MS). Dates of spring 

 departure are : Middle Creek, Gallatin County, April 30, 1909 ; Silver Bow 

 County, March 29, 1910; Helena, March 17, 1911; Choteau, March 30, 1912; 

 Bitterroot Valley, .March 26, 1912, and April 5, 1913 (Bailey, MS). 



Summer records are as follows: A young bird, newly fledged, taken at 

 Chief ]\Iountain Lake, in what is now Glacier National Park, August 19, 1874 

 (Coues, 1874b, p. 573). A pair seen on M^est Fork of Sun River, northern Lewis 

 and Clark County, August 18 and 21, 1912, the female taken August 21 (Saun- 

 ders, 1912g, p. 224). A few seen in mountains of Ravalli County at 5000 feet, 

 August 31, 1909 (Bailey, MS). Waxwings seen at Belton in the breeding season 

 were believed to be of this species (DuBois, MS). Seen at Granite Park, in 

 Glacier Park in summer (F. M. Bailey, 1918, p. 62). 



267. Bombycilla cedronim Vieillot 



Cedar Waxwing 

 A common sununer resident throughout the state. Reported hy neainy ail 

 observers from all parts of the state. Nearly everywhere it is reported as com- 

 mon, but its numbers vary from year to year in a given locality. It is reported 

 as not common in the Bitterroot Valley. Breeds in the Upper Sonoran and 

 Transition zones, in cottonwood groves, willow thickets, and similar places. 



