BRITISH BIRDS. 
41 
young of this bird, and the Gull hitherto described as 
the Larus Cfepidatus, or Black-toed Gull. He further 
adds, hardly any birds of its size are secure from the 
attacks of this Aquatic Hawk; when stimulated by 
hunger, it hesitates not to assault them, to compel 
them to disgorge their food. That singular instinct^ 
which seems to condemn it to depend for its chief sup- 
ply of food on the superior industry- or dexterity of 
other birds, irresistibly impelling it to follow the main 
body of those caterers for its subsistence, in their great 
periodical migrations. 
