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GULL, COMMON SKUA. 
LEstRis CATARRACTES, Wont. 
This Skua, or Bonxie, as the Shetlanders call 
him, is seldom met with on the coasts of England, 
or even of Scotland. So far as the British terri- 
tories are concerned, he appears to be limited 
almost to the Shetland Islands, of three or four 
hill tops of which he has taken special possession. 
This undaunted species attacks with great fury any 
person, however armed, that approaches his haunts 
in the breeding season. His manner of walking, 
swimming, and flying is similar to that of the other 
Gulls, but more vigorous. He feeds on fishes, and 
occasionally young birds, obtaining a great part of 
his subsistence by harassmg the larger Gulls until 
he forces them to disgorge part of the contents of 
their gullet. The nest is made among the grass; 
and the eggs, generally two, sometimes three in 
numker, are olive brown varied with dusky spots. 
GULL, GLAUCUS. 
Larus @uavcus, Bew. 
This large species of Winged Gull is dispersed 
during summer over the Arctic seas; but as 
winter approaches it advances into the temperate 
regions. It is said to be common in Russia, and 
