54 



SEA-BIRDS 



Fig. 1 1 

 Breeding distribution of the fulmar, showing the approximate preponder- 

 ance of dark birds in the populations, indicated by the dark parts of the 



circles {from Fisher, ig52) 



per cent, (probably) in the High Arctic of Spitsbergen and Franz Josef 

 Land; in West Greenland (Low Arctic) the fulmars are very nearly 

 all light. Finn Salomonsen suggested to Fisher (1952) a correlation 

 between this distribution (Fig. 11, above) and surface water-tempera- 

 ture. Dark fulmars are only found in the areas where the water is 

 nearly freezing, or freezing, in July, in which month the adults collect 

 food for the chick fulmar. It is interesting to note that approximately 



