GROUSE 137 



As to the partial migration of Grouse, see 

 Harvie-Brown, "Fauna of Moray," ii. p. 153; Proc. 

 Glasgow N. H. Soc, 1879, p. 167; Clarke and 

 Roebuck, "Yorkshire Yertebrata," p. 62; Zool., 

 1886, p. 107 ; and 1895, pp. 21, 69, 108. Marked 

 Grouse, Field, Sept. 16, 1893; Aug. 21, 1897; 

 Aug. 20, 1898. Grouse swimming, "Fauna of the 

 Outer Hebrides," p. 249 ; and carrying the young, 

 Field, Feb. 2, 1895. 



As to variability of plumage, see Manley, " Notes 

 on Game and Game Shooting," 1880, p. 40; Buck- 

 ley, Proc. Zool. Soc, 1882, pp. 112-116; Grant, 

 Ann. Scot. Nat. Hist., 1894, pp. 129-140 ; and 

 Slater, Zool., 1895, p. 107. Irish Grouse are lighter 

 in colour than those of Great Britain. See Ussher, 

 "Birds of Ireland," p. 230. 



Grouse have been known to breed in confine- 

 ment {Field, Feb. 6, 1863). A tame one lived for 

 six years in captivity at Wilton House, Blackburn, 

 and in 1898 Mr. Assheton Smith showed me a tame 

 covey at Vaynol. 



Hybrids between Red and Black Grouse are 

 reported. Field, March 15, 1863; Feb. 20, 1875; 

 Proc. Zool. Soc, Nov. 7, 1893 ; Field, Sept. 15, 1894 ; 

 and Sept. 5, 1896. Figured by Millais, op. cit. 



A hybrid also between Red Grouse and Ptar- 

 migan has been described (see Newton, Proc. Zool. 

 Soc, 1878, p. 793; Chamberlain, Zool, 1892, p. 44; 

 and Millais, " Gamebirds," figure, p. 181). 



With regard to the annual shedding of the 

 claws in the Grouse family, see under Ptarmigan. 



