\ 



1921 BIRDS OP MONTANA 67 



nest in the latter part of July. I have seen young on the wing in Powell County, 

 July 31, 1910; in Teton County, July 14, 1912; and near Belton, Glacier National 

 Park, August 3, 1914. 



JMigration dates are rather variable from year to year. Cameron gives the 

 end of ^larch and middle of October as times of arrival and departure in Custer 

 and Dawson counties (1907, p. 267). Other dates are as follow^s: Spring: 

 Lombard, April 22, 1909; Big Hole River, April 27, 1910; French Gulch, Deer 

 Lodge County, May 5, 1911; Teton County, May 19, 1912 (Saunders, 1914a, p. 

 132) ; Bitterroot Valley, February 28, 1910, March 27, 1911, April 18, 1912, 

 and March 29, 1913 (Bailey, MS); Highwood, April 3, 1914 (DuBois, MS;. 

 Fall: Bozeman, October 6, 1908; Race Track, Deer Lodge County, September 

 25, 1910; Whitetail Park, Jefferson County, September 26, 1909; Teton County, 

 September 28, 1911 (Saunders, 1914a, p. 132). 



126. Pandion haliaetus carolinensis (Gmelin) 



OSPREY 



A regular and formerly common summer resident of the western lialf of 

 the state, along streams and near lakes, occurring also along the larger rivers 

 eastward. ^lost observers in the eastern half of the state do not list this species. 

 It breeds regularly at Flathead Lake, and probably rarely all through the moun- 

 tainous half of the state, as there are scattered summer records throughout this 

 region. At Flathead Lake old nests testify to its former abundance, but now 

 there are only a few pairs still breeding on some of the islands. 



The only date for nesting is from Flathead Lake, a nest containing young, 

 June 14, 1900, young still in this nest on August 6 (Silloway, 1901a, p. 30). 

 Other localities for summer records are Gallatin County (Richmond and Knowl- 

 ton, 1894, p. 303); Park County; Big Hole Basin (Forrest, 1914, p. 194); 

 Bitterroot Valley (Bailey, MS) ; Belton, August 3, 1914. Records east of the 

 mountains are from the Missouri River above Carroll (Grinnell, 1876, p. 650) ; 

 ])etween Billings and Miles City (Jones and Dawson, 1900, p. 32) ; Fergus 

 County (Silloway, 1903a, p. 33). 



Migration dates are as follows: Spring: Fridley, Park County, May 3 3, 

 1909; Big Hole River, May 1, 1910 (Saunders, 1912a, p. 25) ; Teton River, May 

 19, 1912 (Saunders, 1914a, p 132) ; Bitterroot Valley, April 17, 1911 (Bailey, 

 MS). Fall: Belton, October 2, 1915 (DuBois, MS). 



127. Asio wilsonianus (Lesson) 



Long-eared Owl 



A regular permanent resident evidently throughout the state. Most of the 

 nesting records are east of the mountains, Init the bird evidently nests west of 

 them also, and occurs at considerable elevation in the mountains. Winter rec- 

 ords are all from eastern IMontana, but it is not unlikely that the bird is resi- 

 dent wherever found. 



Nesting records: Custer County, female found dead on six eggs, IMay 7, 1907 

 (Cameron, 1908a, p. 56) ; nesting at Bozeman (Saunders, 1911a, p. 37) ; Lewis- 



