Suborder ALCiTi. 



Family ALCID.^. 



RAZORBILL. Alca torda. 



Common resident. North Atlantic species^ breeding from Nova Scotia, 

 Greenland, and Iceland to Scandinavia, the British Islands, and North 

 France. Migrates in autumn from the coldest parts of its range as far as 

 the confines of the Tropics. 



LITTLE AUK. Alca alle. 



Irregular winter visitor. North Atlantic species, breeding north of the 

 Arctic Circle from the north of Baffin's Bay to Grimsey Island, Franz- 

 Josef Land, and Nova Zembla. Wanders southwards in winter, but not 

 so far as the Tropics. 



BLACK aUILLEMOT. Alca grylle. 



Resident on the Irish coasts and the west coast of Scotland; rare winter 

 visitor to England. Subarctic Atlantic species, resident from Newfound- 

 land and Iceland to the White Sea. 



COMMON GUILLEMOT. Alca troile. 



Resident. Circumpolar species, divisible into several local races. 

 Typical form breeds in the North Atlantic from Nova Scotia, South 

 Greenland, South Iceland, and Bear Island to the coasts of Norway, the 

 British Islands, and West Europe. 



BRilNNICH'S GUILLEMOT. Alca troile bruennichi. 



Accidental visitor ; two British records (Orkneys, Suffolk). Arctic race 

 of Common Guillemot, breeding from Labrador, Baffin's Bay, North 

 Iceland, Jan Mayen, and Spitzbergen to Franz- Josef Land and Nova 

 Zembla. Occasionally strays southwards in winter. 



GREAT AUK. Alca impennis. 



Accidental winter visitor, M'hich became extinct nearly half a century 

 ago. North Atlantic species, formerly breeding on islands off" the coasts 

 of Newfoundland, Labrador, South Greenland, Iceland, and Norway. 



