1 9 1 9- ] Birds of the ( 'anarn Js/ands. 3 1 7 



Swallow to be a bird oF passage in winter. Tlie following 

 are tlic only records : — 



Autumn Miyration Records. 



23-25 Oct. 1887. Orotava, Tonerife. Swallows soi-n (Meade- 



Waldo, .MS. diary). 



29 Oct. to 1 Nov. HI04. Teiierilt'. Numerous Swallows on passage (von 

 Thanner, Orn. Jahrb. 1908, p. 214). 



Runyr.. The Swallow breeds throughout l*iUrope and in 

 north-west Africa, and in winter is found tliroughout 

 tropical and soutliern Africa. 



Delichou urbica iirbica llouse-Alartin. 

 Uirundo itr/jicu Linn. Syst. Nat. 10th cd. 1758, p. 192 — 

 Type locality : Sweden. 



The House-Martin is a Bird of Passage in s[)ring and 

 autumn to the Canary Islands, l)ut lias never been known to 

 breed. 



It cannot ijc considered a very regular migrant, as it turns 

 uj) in varying numbers, sonu;tiines being very numerous and 

 in other years very s(;arce. 



The earliest record is on 5 February, but this is an un- 

 usually early date, and the bird cannot be expected before 

 the beginning of April, in which month the majority of birds 

 passing north have been recorded. 



The latest date upon which House-Martins have been 

 seen is 20 June, but it is worthy of note that between the 

 10th and 3()th ol' June Herr von Thanner ha.s noticed three 

 or four of these birds pass through Vilatlor (a village on 

 the slopes of the peak of Tenerife) every year for ten years, 

 i.e. from 1902-1912! 



Observers arc naturally very scarce in the Archipelago, 

 and this must al\\ays be taken into consideration, but it 

 may safely be surmised that for every bird which is seen 

 in the day 100 others pass in the night. 



The House-Martin has l)een recorded by almost every 

 naturalist of repute who has been in the islands at the time 

 of migration ; and Cabrera^ who published a list of the birds 



