APPENDIX 



LIST OF SEA-BIRDS OF THE NORTH ATLANTIC 

 AND THEIR DISTRIBUTION 



The boundary between 'arctic' and 'temperate' has been taken, after long 

 consideration, as the Arctic Circle, instead of some boundary more real 

 geographically but less practical. For the same reason the boundary between 

 'temperate' and 'tropical' has been taken as the Tropic of Cancer. Species 

 bracketed together tend to be ecological counterparts. 



(i) PRIMARY SEA-BIRDS, BREEDING 



Fulmarus glacialis, fulmar 

 Piiffinus diomedea, N. Atlantic 



shearwater 

 Puffinus puffinus , Manx shearwater 

 f Puffinus assimilis, little shearwater 

 < Piiffinus Vherminieri, Audubon's 

 (^ shearwater 



C Pterodroma hasitata, capped petrel 

 J Pterodroma cahow, cahow . . 

 ^ Pterodroma mollis, soft-plumaged 

 1^ petrel . . 

 Bulweria bulwerii, Bulwer's petrel 

 Pelagodroma marina, frigate-petrel 

 Hydrobates pelagicus, storm-petrel 

 f Oceanodroma castro, Madeiran 

 J fork- tailed petrel 

 I Oceanodroma leucorhoa. Leach's 

 (^ petrel 

 Phaethon aethereus, red-billed tro- 

 pic bird 

 Phaethon Upturns, white-tailed 

 tropic-bird 





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