BIRDS OP THE HUMBER DISTRICT. 209 



distance ; before he could pick it up the wounded bird 

 was attacked by the Skua, which remained clinging 

 to the body of the Gull till shot. 



269. LESTRIS PARASITICUS (Linnaeus) . Richardson's 



Skua. 



A regular autumn and winter visitant to the east 

 coast, arriving in August. Is often very plentiful at 

 this season near Flamborough, where it is obtained 

 in every stage of plumage, but mainly in the dark 

 immature garb, birds in the adult plumage being 

 much less frequent. 



270. LESTRIS LONGICAUDUS, Vieillot. Buffon's Skua. 

 Provincial. Boatswain Gull. 



I have met with this Skua at Mamborough in the 

 autumn. It is not nearly of such common occurrence 

 as the preceding, and is always considered by our 

 collectors a valuable acquisition. 



One, an immature male, received by Mr. Boulton 

 from Flamborough in September 1864*, was in colour 

 a sooty-black, with a slight shade of brown in some 

 lights ; the shafts of the primaries were pure white. 

 The central tail-feathers extended some inches beyond 

 the rest. The tarsus, toes, webs, claws, and sole of 

 the foot were inky-black. 



This Skua breeds in the north of Europe on some 

 part or other of the dreary fells of Lapland, and in 

 See 'Zoologist,' 1864, p. 9365. 



