304 STUDIES IN BIRD-MIGRATION 



loth April (7th earliest), and of their first landing 20th 

 April (earliest i6th), for the birds spend from eight to 

 twelve days at sea off the island before seeking terra- 

 firma. 



The first leave about the middle of July, and 

 practically all have left ere the month of August has 

 run its course. 



PoDiciPES AURiTUS, Slavonian Grebe. — Two occur- 

 rences have been chronicled, of single birds, in October 

 and December, and one of these was forwarded for 

 determination. 



PoDiciPES FLUViATiLis, Little Grebe, — One was shot 

 on 4th November 1907, and sent for identification — a 

 remarkable occurrence at so decidedly pelagic a station. 



