THE BLACK GUILLEMOT 305 



Personally I have never met with Black 

 Guillemots breeding in a big colony of Razorbills 

 and Common Guillemots, though I have occa- 

 sionally met with them so doing in a large mixed 

 crowd of Shags, Cormorants, Herring-, Great and 

 Lesser Black-backed Gulls. I have seen a 

 Chough's nest in a hole adjoining a Black 

 Guillemot's nesting - chamber. In the main, 

 however, this species cares not overmuch for the 

 society of other sea-fowl so much so that now 

 and then it is the sole sort of sea-bird to be found 

 breeding on a particular islet or range of cliff. 



FINIS. 



