1919-] Birds of the Canary Islands. 95 



be dismissed as absolutely valueless, though often quoted by 

 more recent writers without additional proof. 



Again following the plan of the new 15. O. U. List; I have 

 included a tabulated list of species which fall under the 

 various headings under which the "Residents/' "Migrants," 

 and "Visitors'' are arranged. It will show at a glance 

 which species are considered Occasional Visitors, Rare 

 Visitors, Birds of Passage, etc. etc., without having to look 

 up each individual species in the systematic list. 



I have taken special care to note which species I have 

 identified and handled personally, and failing this to men- 

 tion the authority responsible for the bird's inclusion in 

 the authentic list. 



Lastly, I have determined not to enter into any discussion 

 of the various points which may arise bearing on the 

 distribution oF the resident forms or on migratory problems 

 of the Canary Islands until each species has been fully dealt 

 with in the pages of ' The Ibis.' It is, I know, usual to begin 

 an ornithological paper by summing up the conclusions 

 reached by the writer, but in this case the material upon 

 which my deductions are based would not have appeared in 

 print and wovild therefore not be available for reference. 



Distribution, etc. 



The distribution of each species beyond the Canary Islands 

 is given \ev\ briefly in each case, as in a paper which deals 

 largely with migration it is an all important point to know 

 the approximate range of the bird under discussion. In 

 this connection I have particularly made use of the B. O. U. 

 List of British Birds (1915), the 'Hand List of British Birds' 

 by Messrs. Hartert, Witherby, Ticehurst, and Jourdain, and, 

 as a tinal reference, Hartert's ' Die Vdgel der palaarktischen 

 Fauna.' I am very much indebted to Dr. Hartert for allowing 

 me access to some of his still unpublished manuscript. 



I have not attempted to give the life-history of the Partial 

 Residents or of the Summer Visitors who breed in the 

 Archipelago, but have only dealt with them from the point 

 of view of their migrations. 



