17 



Pagophila eburnea (Phipps). 



Ivory Gull. 

 Rissa tridactyla (L.) 



Kittiwake. 

 Chroicocephalus atricilla (L.) 



Laughing Gull. 

 Chroicocephalus ridibundus (L.) 



Black-headed GuU. 

 Chroicocephalus minutus (Pallas). 



Little Gull. 

 Chroicocephalus Philadelphia (Ord). 



Bonaparte's Gull. 

 Chroicocephalus melanocephalus (Nat. 



Mediterranean Blk.-headed Gull. 

 Chroicocephalus ichthyaetus*(P&lla,s) . 



Great Black-headed Gull. 

 Larus glaucus, 0. F. Miiller. 



Iceland Gull. 

 Larus leucopterus, Faber. 



White-winged Gull. 

 Larus marinus, L. 



Great Black-backed Gull. 

 Larus fuscus, L. 



Lesser Black-backed Gull. 

 Larus argentatus, Gm. 



Herring Gull. 

 Larus canus, L. 



Common Gull. 

 Stercorarius cataractes (L.) 



Great Skua. 

 Stercorarius pomatorhinus (Temm.) 



Pomatorine Skua. 

 Stercorarius crepidatus (Gm.) 



Richardson's Skua. 

 Stercorarius parasiticus (L.) 



Buffon's Skua. 

 Ale a impennis, L. 



Great Auk. 

 Alca tor da, L. 



Eazor-bill. 

 Alca troile (L.) 



Common Guillemot. 

 Alca brunnichi (Sabine). 



Briinnich's Guillemot. 

 Uria grylle (L.) 



Black Guillemot. 

 Mergulus alle (L.) 



Little Auk. 

 Fratercula arctica (L.) 



Puffin. 



