36 PACIFIC COAST AVIFAUNA No. 14 



33) ; and Teton County (Saunders, 1914a, p. 128). Probably breeds at Flathead 

 Lake (Silloway, 1901a, p. 39). Breeds at Big Lake (Thomas, MS). 



Reported as a migrant in Fergus County (Silloway, 1903a, p. 13) and in 

 the Bitterroot Valle.y in fall (Bailey, MS). The only migration dates are Terry, 

 average April 1, and earliest March 10, 1902, and Great Palls, average March 



16, and earliest March 10, 1889 (Cooke, WOfia, p. 39). A winter record is Cho- 

 teau, December 27, 1912 (Saunders, 1914a, p. 128). 



33. Aix sponsa (Linnaeus) 



Wood Duck 



Rare. Recorded from Init six localities, as follows: Taken in spring and 

 fall at Fort Custer by Capt. Mix (McChesney, 1879, ]). 2394). Brood seen at 

 Flathead Lake, and young male taken July 31, 1901 (Silloway, 1901a, p. 39). 

 Gallatin County, migrant and breeds in mountains, according to Cooley (Saun- 

 ders, 1911a, p. 33). Bitterroot Valley, one male captured alive near Corvallis 

 in the fall of 1915 (Bailey, MS). Two observed on the Yellowstone near Billings 

 in 1912 by C. S. MacFarland, who was familiar with this species in the east. The 

 birds were observed at close range for ten minutes (Thomas. MS). 



34. Marila americana (By ton) 



Redhe.vd 



A rather uneomirion migrant, principally in the eastern pari: of the state. 

 There are no records west of the continental divide. There are no definite 

 breeding records, and only one case of its occurrence in summer, in Gallatin 

 County, June 29-30, 1909 (Saunders, 1911a, p. 33). Migrant records are Fort 

 Keogh (Thorne, 1895, p. 212), Custer and Dawson counties (Cameron, 1907, p. 

 249), Fergus County (Silloway, 1903a, p. 14) and as below. 



Migration dates: Terry, September 26, 1903 (Cameron, 1907, p. 249); 

 northern Montana, average April 13, and earliest April 7, 1895 (Cooke, 1906a, 

 p. 42); Choteau, April 17, 1912, and September 13, 1911 (Saunders, 1914a, p. 

 128) ; and Helena, April 9, 1911. 



35. Marila valisineria (Wilson) 



Canvas BACK 



A migrant in many localities in the state, but evidently not common. 

 Breeds in the vicinity of Malta, nine eggs being secured June 19, 1903, and a 

 nest found June 28 (Willett, 1907, p. 105). Breeds in the Lake Basin of Yd- 

 lowstone and Stillwater counties (Thomas, MS). 



Recorded as a migrant in Fergus County f Silloway, 1903a, p 14), Gallatin 

 County (Saunders, 1911a, p. 33) and as below. 



Migration dates: Corvallis, October 15, 1911 (Baihy, MS) ; Choteau, April 



17, 1912, and November 24, 1912 (Saunders, 1914a, p. 128); Helena, April 9, 

 1911; Kalispell, October 21, 1917 (Sloanaker. MS). 



Occurs on Flathead Lake in winter, until the lake freezes over, sometimes 

 until late in January (Sloanaker, MS). 



