26o 



BIRDS OF THE BRITISH ISLES. 



eyes, and a triangular patch of the same colour on the 

 nape; irides, straw colour; bill, orange-red on the upper 

 mandible; nail, yellowish-grey; protuberance on each side 

 at the base, black ; and in front a silvery-greyish patch 

 extending to the nostrils ; lower mandible, pinkish ; legs 

 and feet, orange-red ; webs, dusky. Length, about twenty- 

 one inches. The adult female is of a uniform sooty-brown 

 colour, lightest about the neck, and the protuberances are 

 scarcely to be seen ; whilst the colour is dusky. 



Buffcl^bcabeb 2)uch. 



The Buffel-headed Duck {Clangiila albeohi, Linnaeus) is a 

 very irregular winter migrant to the British Islands, and 

 inhabits the Northern Nearctic Region. The adult is con- 

 siderably less in size than Clangnla glaucion, to which it 

 bears a close resemblance. It can readily be distinguished 



