PLATES IN COLOUR 



1 Gahow. Painting by Roger Peterson frontispiece 



2 Storm-petrel incubating in rock crevice facing page i6 



3 Cormorant colony 1 1 7 



4 Great blackback at nest 124 

 5a Roseate tern 245 

 5^ Sandwich tern , 245 

 6a Little tern on eggs 252 

 6^ Black tern on eggs 252 



7 Razorbills 277 



8 Puffins sunning on a breeding-slope 284 



PLATES IiN BLACK AND WHITE 



I Rockall facing page 52 



iia Eldey, a last refuge of the great auk; and gannets 53 



lib Elegug Stack; guillemots, razorbills and kittiwakes 53 



III Dry Tortugas ; sooty terns 60 



IV Double-crested cormorant, nesting in trees 61 

 va Grassholm gannetry 84 

 vb Bonaventure gannetry 84 



VI Brown pelican 85 



VII Shags and kittiwakes 92 

 VIII Dune-dwelling Sandwich terns 93 



IX Guillemot cliff in Shetland 96 



vi 



