BRITISH BIRDS. 19! 



under parts white ; bill orange with a blackish tip ; feet 

 orange. Length 8*00 ; wing 670. Young : head, nape, 

 and mantle mottled with blackish-brown ; bill and feet 

 brown. 



Moderately common from May to September on most 

 parts of our coasts. Eggs : 2 or 3 ; stone-colour with 

 dark brown and grey spots, but not blotched ; 1-30 by "95. 



327. Sterna easpia, Pall CASPIAN TERN. 



Hab. Almost cosmopolitan. 



A rare straggler to east coast of England, where 1 6 or 17 

 have been obtained and others seen. Has also occurred 

 in Dorset and Hants. 



328. Sterna angliea, Montagu. GULL-BILLED TERN. 



Hab. Southern Palasarctic and Nearctic regions. 



A rare straggler to England, scarcely more than twenty 

 examples having been obtained. The reported Irish 

 specimen turns out to be an immature Arctic Tern. 



329. Sterna eantiaea, Gmel. SANDWICH TERN. 



Hab. Temperate Europe, N. Africa and S.W. Asia. 



Adult : head and nape black ; mantle and wings pale 

 grey, primaries darker and margined with white on 

 inner webs ; rump, tail and under parts white, latter with 

 a pink tinge. In winter black is chiefly confined to nape. 

 Length 14*75 > wing I2'oo. 



A summer visitor in small numbers to the English 

 coasts and to several localities on both sides of Scotland ; 

 in Ireland only known to breed in one locality near 

 Ballina, Co. Mayo. Eggs : 2 or 3 ; ranging from cream- 

 colour to warm buff, spotted variably with reddish-brown 

 of two shades and grey; 2'oo by 1*45. 



