GTRFAL00N8. 



609 



almost white with age. It inhabits the Arctic regions, where it 

 feeds on large birds, principally Gallinacese or Palmipedes. 



Three varieties of this species are known, all very similar to 

 each other : the White Falcon, called by Buffon the "White Gyr- 

 falcon of the North, which inhabits the extreme north of the two 



Fig. 285.— Sultan Falcons (^F.peregrinator). 



continents ; the Falco islandicus, or Gyrfalcon of Iceland, peculiar 

 to that country ; and the Gyrfalcon of Norway, which is found in 

 Scandinavia, and sometimes appears in Germany, Holland, and 

 France. 



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