128 Among the Birds in Northern Shii'es. 



the heaths. Not a few of them are almost sur- 

 rounded by trees of various kinds, and at the North 

 Lincohishire settlement nests are not unfrequently 

 made in the branches. We have already described 

 the colonies of the Black-headed Gull in previous 



The Black-headed Gull. 



works, so that but few details are needed here. In 

 Lincolnshire the birds wander far and wide from 

 their station near Brigg, and parties of them may 

 be met with on the fields many miles from home. 

 The Gulls are as regular in their habits as Rooks, 

 with which we have often seen them fraternizing, 

 flying out to feed on the wet meadows, and follow- 

 ing the plough until evening, returning home in 

 straggling streams just like their sable companions. 

 As we get near Brigg the birds become more abun- 



