168 CATALOGUE OF BIRDS. 



EAZOE BILL. (SUMMER.) 

 Case 214. 



The birds are here represented at the foot of the Bass 

 Rock 



Numbers of Guillemots, Puffins, and Kazor Bills, 

 may be observed about daybreak resting on the lower 

 ledges, but the approach of a boat always drives them 

 into the water. 



The ordinary visitor to the rock would never imagine 

 the animated appearance of the spot if viewed shortly 

 after sunrise. 



Both at the Bass Hock and the Fern Islands these 

 birds, from some unknown cause, are rapidly becoming 

 scarcer year by year. Indeed, I expect that they have 

 now entirely ceased to breed on the Ferns. At the 

 time of my last visit, in 1867, there was but a single 

 pair frequenting the Islands. 



At the more northern stations their numbers show 

 no signs of diminution. 



The specimens in the case were obtained in the 

 Firth of Forth, in the vicinity of the Bass Kock, in 

 June, 1865. 



GLAUCUS GULL. (IMMATURE.) 

 Case 215. 



Immature birds of this species are common along the 

 north-east coast at most seasons of the year. 



The mature Glaucus is, however, rarely met with 

 except in severe weather, and it is even then seldom 

 that they are obtained in the south. Though I have 



