BRITISH BIRDS' NESTS. 153 



but distinguished from those of the Ptarmigan by 

 being less buff in ground-colour and more spotted. 

 Size about 1.75 by 1.25 in. (See Plate XV.) 



Time. Eggs have been found as early as 

 February and as late as July ; but April, May, 

 and June are the principal breeding months. 



Remarks. Resident. Notes : female call, yow, 

 yow, yow, pronounced with a peculiar nasal catch ; 

 crow notes, cabow, cabow, cabeck, cabeck, beck, beck ; 

 cockaway, cockaway ; alarm note of male, cock, 

 cock, cock. Local and other names : Gorcock, 

 Moorfowl, Moorcock, Moorgame. A close sitter, 

 resorting to decoy methods when disturbed. 



GROUSE, SAND. 



(Syrrhaptes fiaradoxus.) 



Order PTEROCLETES ; Family PTEROCLID^E (SAND GROUSE). 



Although several great incursions of this species 



have from time to time taken place, and the bird 



during its latest, in 1888, bred with us, it has 



no rightful claim for inclusion at length in this work. 



GUILLEMOT, BLACK. 



(Una grylle.} 

 Order PYGOPODES ; Family ALCID,-E (AUKS). 



Description of Parent Birds. 

 Length about fourteen inches. Bill 

 fairly long, straight, and black. 

 Irides brown. The whole of the 

 plumage is black, with exception 

 of a large patch on the coverts 

 of each wing, which is white. 

 Legs, toes, and webs vermilion-red ; 

 GUILLEMOT. claws black. 



