Notes from Corsica. 27 



18. Common Swift. Cypselus apus. 



In 1883 first seen on 12th April, in 1884 on 8th April. 

 When in the mountain-forests I noticed the Swifts entering 

 the holes of the Great Spotted Woodpecker. 



19. White-bellied Swift. Cypselus melba. 



In 1883 first seen on 25th April, in 1884 on 10th April. 

 I found this species nesting in some inaccessible rocks in 

 the beginning of June. 



20. Swallow. Hirundo rustica. 



In 1883 first seen on 16th March, in 1884 on 22nd March. 

 A few seen going south on 16tli November. Numbers re- 

 main to nest. 



21. Martin. Chelidon urbica. 



In 1883 first seen on 20th March, in 1884 on 21st March. 

 Numbers remain to nest. 



22. Sand-Martin. Cotile riparia. 



In 1883 first seen on 11th April, in 1884 on 8th April. 

 Never seen in numbers. Though the river-banks, in places, 

 were suitable, I never saw any sign of a nest, or of a bird 

 after the passage was over. 



23. Crag-Swallow. Cotile rupestris. 



Fairly common and resident. With bad weather this bird 

 comes down to the plains ; otherwise it remains high up the 

 mountain-sides during the whole year. I took a nest on 

 May 13th with four fresh eggs. 



24. Common Nightjar. Caprimulgus europaus. 



First heard on 12th May, though they must have arrived 

 some time before. First eggs taken 28th May. 



25. Common Kingfisher. Alcedo ispida. 



Numbers seen during the winter, but they began to get 

 scarce after the end of January. 



26. Common Bee-eater. Merops apiaster. 



In 1883 first seen on 19th April, in 1884 on 14th April. 



About the middle of April, the natives told me that it was 



the time that the Bee-eaters arrive, and a day or two after- 



