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Larus glauciis Brunn, ^^/e-^^^/e. ^»/7. ^з/^. ^4i. 'Vi. '^/7. ^Vi. 

 'Vi. "/7. 



The Glaucous Gull bred in Jan Mayen. 



On a high holm south of Stewart we found young ones, 

 more than half-grown on July 27*\ 



During the whole journey I paid special attention to the 

 Glaucous Gulls being anxious to distinguish, if possible, the Larua 

 leucopterus Faber, but neither in Jan Mayen nor in East Green- 

 land did I see anything but typical specimens of L. glaucus. 

 Later on 1 have seen numbers of Lm'us leucopterus on the 

 West-coast of Greenland, and there is no difficulty at all in 

 distinguishing the two races when the birds are seen alive. 



Lams tridactylus L. "-^i^-Vi. ^'h. '^'h. ^^/s-^Vs. Ь'^-^в. 



The Kittiwake breeds in Jan Mayen and possibly on Кар 

 Brewster. In Jan Mayen the birds were sitting on June 28"\ 

 On those bird -cliffs which 1 had the opportunity to see here, 

 it occupied the upper shelves. 



The Kittiwakes are generally seen in flocks and are fond 

 of following the ships, but even during the lightest nights they 

 disappear as a rule for a short time. When one of the flock 

 gets hold of something too big to be swallowed quickly, the 

 rest of them at once, with great squalling and noise attack 

 the lucky one to take the spoil away from it — if Lestris 

 parasitica be not at hand to save them the trouble. 



The flocks seen at open sea, far from land, during the 

 summer time generally consist of young birds. These offer 

 very little resistance to the robberies of the Lestris, while the 

 old birds, especially when they have young ones to provide for, 

 do their utmost to avoid delivering the spoil. When finally the 

 Lestris attacks so hard that feathers are torn off the Kittiwake, 

 the poor creature will try as a last scheme to throw itself 

 on the water, where the Skua can't very well press so hard 

 upon it. 



