64 PACIFIC COAST AVIFAUNA No. 14 



ties (Cameron, 1907, p. 264), in Fergus County (Silloway, 1908a, pp. 80-;31), 

 and at Billings (Thomas, IMS). The westernmost records for this species are 

 Gallatin County (Saunders, 1911a, p. 26), Gold Creek, Powell County (Saun- 

 ders, 1912a, p. 25), and Kalispell (Sloanaker, MS). 



The earliest date for nesting is April 25, 1900, in Fergus County (Silloway). 

 The latest date for eggs is June 2, 1912, in Teton County (Saunders). The 

 earliest date for young is IMay 21, 1916, at Button (DuP>ois, IMS). In addition 

 to these there are numerous other nesting notes from vai-ious points in eastern 

 iMontana, the dates hetween the extremes given. 



^Migration dates: Dates of migration are not availahle from nmst i)laees, 

 as many of the hirds winter in the eastern part of the state. Tlie only records 

 I have are Stuart, Silver Bow County, April 16, 1911, Pipestone Creek, Jeffer- 

 son County, October !), 1!)10, and Kalispell, Xovember IS, 1916, oue taken 

 (Sloanaker, MS). 



117. Aquila chrysaetos (Linnaeus) 



Golden Eagle 



A permanent resident throughout the state. Formcn-ly common, now rather 

 rare. Reported hy most observers from various localities scattered over the 

 entire state. Nests mainly in the pine hills and badlands in the eastern ])art of 

 the state, and in the mountains in the western half. Seldom seen in the valleys 

 or on the prairies in summer, but frequently common in such i)laces in winter. 



Nesting data: Pryor's Fork of the Yellowstone, near Fort Custer, a nest 

 found with eggs May 22, 1883, by Dr. J. C. Merrill (Bendire, 1892. p. 268). 

 Other detailed accounts of the nesting of this species in Montana may be found 

 in the writings of Cameron (1905b, pp. 158-167, and 1908b. })p. 251-268). 



118. Haliaeetus leucocephalus alascanus C. H. Townsend 



Northern Bald Eagle 



A rare permanent resident throughout the state, though in greatest num- 

 bers in the mountains of the northwestern ])art. Commoner in Novembtn- and 

 March than at other seasons, but evidently found throughout the year. 



Summer records: Rare on the Yellowstone and Musselshell (Allen, 1874, 

 p. 65). Seen on the Missouri (Grjnnell, 1876, p. 650). Generally distributed 

 (Hayden, 1862, p. 153). Bozeman, July, 1909 (Saunders 1911a. p. 36). Rare 

 at Flatliead Lake (Silloway, 1!)(»1a, p. 47). Rare breeder in Ravalli County 

 (Bailey, MS). Belton, June 30, 1915, and Dutton, June 23, 1916 (Dubois, MS). 

 There is little that is definite about the nesting of this species in the state, nor 

 any dates to show when it nests. A pair are rejiorted lo have nested on Ihe 

 Boulder River near Big Timber (Thomas, MS). 



Migration dates: Custer County, IMarch 17, 1905. and Xoveiiilx'i- (i. 1905 

 (Cameron, 1907, p. 265) ; Gallatin County, Xoveiubei- 10, 1!)0S (Sauiulei's. 1911a, 

 p. 36); liitterroot Valley, March, 1911 (Bailey, MS). 1 found this species 

 almost <'ominon on several days from November 23 to Deceinber 2, 1909, in the 

 Long Pine Hills of extreme southeastern Cai'tei- Count v. The hirds were high 



