238 



SEA-BIRDS 



Fig 42 

 a {Left) Breeding distribution of 

 Sabine's gull, Xema sabini. In east 

 Greenland and Spitsbergen it is 



sporadic 

 b (Below) Breeding distribution of the 

 kittiwake, Rissa tridactyla; black line 

 encloses usual breeding range and 

 black dots represent some known 

 stations. Asterisks mark the three 

 known breeding-stations of R. brevi- 

 rostrisy the red-legged kittiwake. 



*In the nineteen-forties the following breeding-places were occupied (though not 

 all in every year) : 



Scillies (Menavaur and Gorregan), Mainland Cornwall (Carn-les-Boel, Tol- 

 pedn, Morvah, St. Agnes), Lundy, South Devon (Berry Head, Hopes Nose, 

 Scabbacombe), Cumberland (St. Bee's Head), Northumberland (Fames, Dun- 

 stanburgh. North Shields), Durham (Marsden), Yorkshire (Flamborough, Speeton, 

 Filey, Bridhngton). In 1946 a pair laid eggs on a seaweed nest-drum on flat 

 sand among a group of Sandwich terns on Scolt Head, Norfolk. 



