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62 PACIFIC COAST AVIFAUNA No. 14 



111. Astur atricapillus striatulus Ridgway 



Western _ Gosi i a w k 



Suiiiitiei' I'csidcnt in thr riiountainous h;ilf ol' Hie state. 'Vlw Goshawk ha.s 

 been found in the ))reeding season in Gallatin County (Saunders, 1911a, p. 36), 

 in Lewis and Clark County (Saunders, 1914a, j). 132), and in the Big Hole 

 Basin, where a nest and four young were found June 1, 1913 (Forrest, 1914, p. 

 194). in tlie last case the birds were definitely identified as belonging to the 

 western race, l)ut in the other cases the birds may have been of either race. 



Goshawks are reported to be rare winter visitors in the Bitterroot Valley, 

 where they are probably of the western race (Bailey, MS). Kalispell. one, Sep- 

 tem])er 22, 1917 (Sloanaker, IMS). 



112. Buteo borealis krideri Iloopes 



Krider Hawk 

 Seen between Billings and J\Iiles City, August 13, 1900 (Jones and Dawson, 

 1900, p. 32). Nests at Toluca, Big Horn County, where a specimen was taken 

 in May, 1918 (Tliomas, MS). 



113. Buteo borealis calurus Cassiu 

 < Western Red-tail 



A common summer resident, found throughout the state, but evidently most 

 rtl)undant in the mountains of the western half. In the Canadian zone of the 

 mountains it is the only common hawk. Reported to breed in Caster and Daw- 

 son counties (Cameron, 1907, p. 262) ; Fergus County (Silloway, 1903a, p. 29) ; 

 Flathead Lake (Silloway, 1901a, p. 46) ; Gallatin County (Saunders, 1911a, p. 

 36) ; southwestern Montana (Saunders, 1912a, p. 25) ; Big Hole Basin (Forrest, 

 1914, p. 194) ; Belt Mountains (Williams, 1882a, p. 63) ; Teton County (Saun- 

 ders, 1914a, p. 132) ; Bitterroot Valley, rare (Bailey, MS). A nest and two eggs 

 reported between Forts Union and Benton, June 18, 1862 (Cooper, 1869b, p. 

 295). No other definite dates for nesting are availa])le, but I have found the 

 nests twice in June, in the Sixteen Mile Canyon, Gallatin County, in 1909, and 

 near ]^>ernice, Jefferson County, in 1911, when it was impossible to ascertain 

 whether they contained eggs or young. These uests, and others 1ha1 1 luive lo- 

 cated in the Sun River country, were built on rock cliffs, and 1 believe this spe- 

 cies nests more frequently in such situations than in trees in westei'u jMontana. 



Migration dates: Sedan, Galhitin County, April L 190!) ; Silver Bow 

 County, April 5, 1910; Braekett Creek, Gallatin County. October 12, 1908; 

 Three Forks, October 17, 1909; Deer Lodge (bounty, October 9, 1910 (Saunders, 

 1912a, ]). 25). 



114. Buteo swainsoni iSonaparle 



Sw.MNSON IIaWK 



A connnon sunnner I'esideiit on Ihe prjiirics and in the luoiinlain valleys 

 throughout the slate. Repofted by nearly all ohsei'vcrs, and IVoiii all I'egions 



