318 STUDIES IN BIRD-MIGRATION 



in describing this bird as by no means numerous in the 

 Channel Islands. 



Regulus regulus, Goldcrest. 



Alderney, — There were arrivals of this species on 

 the nights of 25th and 26th September, and many were 

 seen in the hedgerows on the following days. Mr Cecil 

 Smith doubts whether the numbers of this bird in the 

 Channel Islands are regularly increased in the autumn 

 by migrants. There are, however, no suitable haunts 

 for this bird in Alderney, and it was not seen prior 

 to the immigration, which occurred on the night of 

 25th September. 



Phylloscopus collybita, Chiffchaff, 



Alderney, — Several were observed and heard among 

 the other immigrants which put in an appearance on 

 25th and 26th September. Mr Cecil Smith has no 

 information regarding this bird in Alderney, where it is 

 only a bird of passage. 



Phylloscopus trochilus, Willoiv- Warbler. 



Alderney. — Many observed on 25th, 26th, and 27th 

 September, having arrived with other immigrants on 

 the nights preceding the two first-named dates. This 

 bird is not mentioned by Mr Cecil Smith for Alderney. 



Sylvia sylvia. Common Whitethroat. 



Ushant. — Several whitethroats were seen ; and the 

 species is probably a summer visitor, as well as a bird of 

 passage, on the island. 



Alderney. — Was still common up to 28th September. 



TuRDus viscivoRUS, Mistle-Thrzisk. 



Alderney. — On passage, were seen in the hedgerows 

 in company with a number of immigrant species on 25th 

 and 26th September. 



