i6 3 



holes in cliffs, rabbit burrows, and ruined buildings 

 being occasionally made use of. 



The sketch from which the case is copied was 

 taken from the old fortifications on the Bass Kock. 

 The Puffin here nests in the holes in the crumbling 

 masonry of the battlements. 



The specimens were obtained in the Firth of 

 Forth in June, 1865. 



See "Kough Notes," Vol. III., Plate 25. 



BLACK-HEADED GULL. (WINTER). 

 Case 236. 



In autumn, as soon as the young are sufficiently 

 strong, these Gulls come down to the coast, where 

 they appear to take up their residence for the 

 winter, making occasional visits into the country in 

 search of food. 



The Black-Headed Gull is partly nocturnal in 

 its habits. When stopping at Canty Bay, in East 

 Lothian, I have noticed small flocks coming 

 regularly every evening just at dusk to certain spots 

 along the shore, where they fed on the sand-hoppers 

 and other insects which were plentiful among the 

 dead sea-weed washed up by the tide. 



The specimens in the case were shot on the 

 coast of the Firth of Forth in September and 

 October, 1874. 



See " Kough Notes," Vol. Ill, Plates 35 and 36. 



BLACK-HEADED GULL. (SUMMER). 

 Case 237. 



This handsome bird is plentiful from north to 

 south, breeding in colonies in various parts of the 

 country. 



Though frequenting the sea coast during the 

 autumn, winter and early spring, it retires inland 

 for the summer months and rears its young either 



