1919-] Birds of the Canary Islands. 85 



knowledge of the bii'ds of all the islands, preparatory to 

 publishiug a book. 



In the course of these years Tenerife, Gran Canaria, Fuer- 

 teventura, Lanzarote, Graciosa, Montana Clara, the Roque 

 del Oneste, and Allegranza were visited and explored at 

 different times, and many smaller expeditions were under- 

 taken in search of birds ; eight in Gran Canaria alone. 



I had still three islands to visit — Pal ma, Gomera, and 

 Hierro ; but the war successfully put a stop to all ornitho- 

 logical work and has claimed ray attention elsewhere. 



Having been recently transferred for duty in England after 

 twenty-eight months' active service with the British Red Cross 

 Society in France, T have been able to give a certain amount 

 of time to ornithological work, and have decided to bring- 

 out, in ' The Ibis,' the part of ray work which is complete 

 and which deals principally with the migratory birds, with 

 special reference to those occasional and rare visitors that 

 have wandered to the archipelago from time to time. My 

 objects in doing so are twofold : 



1. The irapossibility of corapleting my original plans for 



some considerable time to corae and the loss of tirae 

 which would inevitably ensue before publication in a 

 larger form could take place. 



2. The hope that before the data which I have got together 



can be published in book form, ornithologists in- 

 terested in Canarian Ornithology will correct any 

 mistakes which they may find, add any records which 

 I may have missed or which have not been published, 

 and throw further light on problems which I have 

 failed to elucidate. 



The present paper professes to include all that is known 

 of the regular Birds of Passage and of the exceptional 

 visitors to the Canary Islands, and is a compilation of every- 

 thing that has been written worthy of notice from the time 

 of Ledru (1810) until the end of 1914. 



In order that this paper may be as complete as possible, I 

 have included in the Systematic List the Resident Birds. 



