TAUOKNA. ANAS. 1G7 



Tadorna casarca. RUDDY SHELD-DUCK. 



Anas casarca Lintueus, Syst. Nat. 12th ed. iii. A pp. 17G8, 

 p. 224 : Russia. 



Tadorna casarca (Linn.) ; B. O. 17. List, 1st ed. 1883, p. 122 ; 



Sounders, Manual, 2nd ed. 1899, p. 421. 

 Casarca rutila (Pall.) Salvador*, Cat. Birds B. M. xxvii. 1895, 



p. 177. 

 Casarca = a Goose, in South Eussian ; Tartar karakchas= black GOOBO. 



IHstribution in the British Islands. An Occasional Visitor. 

 Between June and September 1892, during the great drought 

 in southern Europe, many visited the coasts of Great Britain 

 and Ireland, flocks of from ten to twenty being seen in some 

 places. Some of the otlier records in the southern counties 

 of England probably refer to birds which had escaped from 

 captivity. A female was obtained at Suliskerry, 40 miles 

 west of the Orkneys, in June 1909. 



General Distribution. Small numbers of the Ruddy 

 Sheld-Duck breed in south Spain, but it is otherwise rare 

 west of the Adriatic ; it is more plentiful in south-eastern 

 Europe. In Asia it breeds in Persia and Turkestan, central 

 Tibet and Mongolia up to 16,000 ft., and on Lake Baikal. It 

 winters in India, south China, and Formosa, and is a resident 

 in north Africa from Morocco to Egypt and Abyssinia. It 

 has wandered to north Europe, Iceland, and even Greenland ; 

 also to the Amur valley, north China, and Japan. 



Genus ANAS Linnaeus, Syst. Nat. 1758, p. 122. 

 Type : A. bosckas Linn. 



Anas=a, Duck in classical Latin; akin to vr\rra, vrjffffa, vaaaa. Germ. 



Ente, Lith. antis. 



Anas boschas. WILD DUCK or MALLARD. 



Anas boscnas Linnceus, Syst. Nat. 1758, p. 127 : 



Sweden. $. C. 

 Anas boscas Linn.; B. O. U. List, 1st ed. 1883, p. 125; Salvador^, 



Cat. Birds B. M. xxvii. 1895, p. 189 ; Sounders, Manual, 



2nd ed. 1899, p. 423. 



