Birds of East Prussia. 521 



Larus fuscus, L. 



Common along the coast during the winter. 



LaRUvS marinus^ L. 



Not rare on the sea in winter, but much rarer than 

 L. fuscus. 



Larus argentatus, Briinn. 



Not rare in winter, but a})parently docs not breed in this 

 country. 



Larus glaucus, Briinn. 



Extremely rare. A specimen was lulled on the coast in 

 the winter of 1882, which I have examined. 



Larus leucopterus, Faber. 



A young specimen was killed long ago near Pillau. 



Stercorarius parasiticus (L.). 



Not common along the coast in winter, somewhat less 

 rare in October. 



Stercorarius pomatorhinus (Temm.). 

 Very rare. A specimen shot near Pillau. 



PODICEPS FLUVIATILIS, TuUSt. 



Not rare in summer on small ponds. 



PoDiCEPS NiGRicoLLis (Brclim) . 



Breeds on some lakes, especially in the eastern parts. As 

 a rule many nests are placed close together. 



PoDICEPS AURITUS, L. 



Has been shot a few times on passage, but does not breed. 



PODICEPS GRISEIGENA, Bodd. 



This species has been recorded as breeding in East Prussia 

 by Rathke and others. 1 did not find it in summer, but it 

 has been shot occasionally on passage. 



PoDICEPS CRISTATUS, L. 



Breeds in large colonies on the Haffs and many lakes. 

 Generally many nests are near together, but occasionally a 

 single pair inhabits a lake or pond. 



