296 STUDIES IN BIRD-MIGRATION 



4th July 1 90 1, when eleven, the largest number observed, 

 appeared. 



CucuLUS CANORUs, Cuckoo. — Is a very uncommon 

 visitor, one which has only been recorded on five 

 occasions in eleven years. These records were made 

 in the spring, at dates ranging from 8th May to 

 8th June, and relate to the appearance of single birds. 



Dendrocopus major. Great Spotted Woodpecker. — 

 Two appeared on the island on 24th September 1905, 

 the only record. 



Asio AcciPiTRiNUS, Skort-eured Owl. — There are 

 autumn records of three occurrences late in October. 

 These relate to the visits of one or at most two birds. 

 The only bird seen in spring appeared on 30th April 

 1910. 



Falco tinnunculus. Kestrel. — Evidently a rare 

 visitor, there being only three entries of its occurrence in 

 the records. These refer to the appearance of single 

 birds in February, August, and September. 



Falco /ESALOn, Merlin. — A frequent visitor during 

 the period when small birds are abundant on passage in 

 the autumn — i.e., from late in August until November. 

 It seldom appears in spring, but one is recorded for 5th 

 April 1907, and another for 22nd May 1910. 



Ardea cinerea. Heron. — This is an irregular and 

 infrequent visitor, but has been observed during most 

 months of the year, more especially in August, 

 September, and October. As a rule, single birds are 

 seen, but on 15th October 1899, five appeared. 



Phalacrocorax graculus. Shag. — An abundant 

 resident (Tomison). 



Anser albifrons, White-fronted Goose. — One was 

 observed feeding on the island on 3rd May 1910. 



