CYGNUS. 165 



Cygnus bewicki. Bewick's Swan. 



Cyg-nus bewickii YarrelL Trans. Linn. Soc. xvi. 1833, 



p. 453. 



Cygnus bewleki Tarrell ■ B. 0. U. List, 1st ed. 1883, p. 121 ; 

 Salvadori, Cat. Birds B. 31. xxvii. 1895, p. 29 ; Saunders, 

 Manual, 2nd ed. 1899, p. 415. 



BewicM, named after Thomas Bewick, naturalist and artist (1753-1828), 

 author of a ' History of British Birds.' 



Distribution in the British Islands. — A regular Winter 

 Visitor. In ScotLinc], especially in the Hebrides, it is some- 

 times very numerous, notably on the island of Tiree ; also 

 jn the north and west of Ireland. In England and Wales 

 it is often met with in severe weather, but is much rarer 

 than C. cygnus. 



General .Distribution. — Bewick's Swan breeds in Arctic 

 Europe and Arctic Asia, from the White sea eastwards to 

 the delta of the Lena; also on Kolgnevand Novaya Zemlya. 

 It winters in western and central Europe, the Caspian sea, 

 China, and Japan. East of tlie Lena it is represented by 

 the larger form C. b. jankowskii AlpherakJ^ 



Cygnus olor. Mute Swan. 



Anas olor Gmelin, Syst. Nat. i. pt. 2, 1789, p. 501 : 



Russia. 



Cygnus olor (Gmel.) ; B. O. U. List, 1st ed. 1883, p. 119; 

 Salvadori, Cat. Birds B. M. xxvii. 1895, p. 35 ; Saunders, 

 Manual, 2nd ed. 1899, p. 417. 



Olor=a, Swan, in classical Latin, especially in poetry ; perhaps a Spanish 

 word. Cf, Welsh alarch. 



Distribution in the British Islands. — A Resident, introduced 

 and generally distributed in a semi-domesticated condition. 

 Continental wild birds also visit our Islands on migration. 



General Distribution. — The Mute Swan breeds in south 



