220 BIRDS OF THE BRITISH ISLES. 



plumage white ; greater part of the bill, reddish-orange ; 

 protuberance at base of upper mandible, lores, edges pf 

 mandibles, nail, and nostrils, also legs and feet, black ; 

 irides, brown. Length, about sixty inches. The female is 

 less in size, and protuberance is not so large. The young 

 have the plumage mostly uniform greyish-brown ; bill and 

 legs, leaden colour. 



Ibooper Swan. 



THE Hooper Swan (Cygnus musicus, Bechstein) is a 

 common autumn and winter migrant to the British Isles, 

 and inhabits the Northern Palearctic Region. The adult 

 has the whole plumage white ; the lores and basal portion 

 of bill, reaching below the nostrils, yellow ; remaining 

 portion of bill, black ; irides, brown ; legs and feet, black. 

 Length, about sixty inches. The female is a trifle less. 

 The young have the upper parts ashy-brown, lighter below ; 

 bill, legs, and feet, dusky flesh colour. 



