270 LARID,E. 



in spring and autumn and occasional in summer, chiefly 

 met with in the eastern and southern counties of England, 

 irregular in the west and uncommon in the midlands. 

 North of Yorkshire it occurs rarely as far as the Tay and 

 Loch Lomond, but it has only twice been recorded from the 

 north of Scotland, having been observed in the Orkneys 

 and the Outer Hebrides in 1913. Formerly it nested in 

 many parts of England, but ceased to do so in the Sol way 

 Firth in 1855 and in Norfolk in 1858. To Ireland it is 

 a rare visitor, chiefly in autumn. 



General Distribution. The Black Tern breeds in Europe, 

 south of about 60 N. latitude from south Sweden, Finland, 

 and Lake Ladoga southwards to the Mediterranean ; also in 

 western Siberia, in Tobolsk to 58 N., Tomsk, and as far east 

 as the Obi River and Lake Zaisan. In winter it visits 

 Africa, ranging south to Loango on the west and Abyssinia 

 on the east. It is accidental in the Faeroes. In North 

 America it is represented by the nearly allied H. n. suri- 

 namensis, which winters in South America. 



Hydrochelidon leucopareia, WHISKEKED TEEN. 



Sterna leucopareia Temminck, Man. d'Orn. 2nd ed. ii. 

 1820, p. 746 : Hungary. 



Hydrochelidon hybrida (Pall.) ; B. O. U. List, 1st ed. 1883, 

 p. 184 ; Sounders, Cat. Birds B. M. xxv. 1896, p. 10 ; id. 

 Manual, 2nd ed. 1899, p. 637. 



Leiu;opareia= white-cheeked, from \tv*os and irapeia. 



Distribution in ilie British Islands. A Rare Visitor. It has 

 occurred about nine times in the south of England since the 

 first was recorded in Dorsetshire in 183ti ; also twice in 

 Norfolk and once in Yorkshire ; once in Scotland and once 

 in Ireland. 



General Distribution. The Whiskered Tern breeds in 

 southern Europe from south Spain eastwards to south Russia, 

 and, occasionally, as far north as Poland, in 51 N. latitude. 



