Birds of Heligoland. 21 



end of the year. A few in 1872 and 1876 ; and again common 

 in 1888^ when many were shot from 25th of April to 20th of 

 July. 



242. Perdix cinerea. 



Very rare; only known with certainty to have occurred 

 once. 



243. COTURNIX COMMUNIS. 



Generally one or two during the year. 



244. COLUAIBA PALUMBUS. 



In small numbers in March and April^ in greater numbers 

 from the middle of September to the middle of November. 



245. COLUMBA LIVTA. 



Very rare ; one shot every ten years or so. 



246. CoLUMBA (ENAS, 



One or two seen every spring and autumn. 



247. TURTUR AURITUS. 



Common from the middle of May to the middle of June, 

 and again in autumn, but in much smaller numbers. 



248. TuRTUR RISORIUS. 



Many years ago an example, believed to have belonged to 

 this species, was shot. 



249. Otis tetrax. 



Two shot half a century ago, and a third in June 1882. 



250. CURSORIUS GALLICUS. 



One shot about the year 1835. 



251. Grus cinerea, 



A bird supposed to have belonged to this species was seen 

 in April 1867. 



252. Grus virgo. 

 One shot in May 1837. 



253. CiCONIA ALBA. 



Occasionally seen. 



254. CiCONIA NIGRA. 



One shot in May 1889; two or three others about thirty 

 years ago. 



