SNOW GOOSE. 377 



Other rarer birds of the Family Anatidce : — 

 MUTE SWAN. 



CYGNUS OLOR. 

 Genus Cygnus. 



This is the Swan which is seen in a semi-domesticated 

 state on our lakes and ornamental waters. Whether 

 it has ever migrated to us as a visitor in its wild state 

 is doubtful, but it is probable, since it breeds in 

 Denmark and Germany, that it has occasionally 

 wandered over. 



HOOPER SWAN. 



CYGNUS MUSICUS. 



Genus Cygnus. 

 Wild Swan — Whistling Swan — Elk. 



A fairly common winter visitor. At Emsworth, in 

 Hants, flocks of a hundred birds are recorded. 



BEWICK'S SWAN. 



CYGNUS BEWICKI. 



Genus Cygnus. 



Also a fairly common winter visitor ; most numerous 

 on the west coast of Ireland. 



SNOW GOOSE. 



ANSER NIVALIS. 



Genus Anser. 



An American species, which has been shot occasion- 

 ally in Ireland. 



