386 LAKID^E 



web, but chiefly pure white on the greater part of the inner 

 web ; tail and rump, white ; fork of tail, short ; throat, 

 breast, and abdomen, white, often suffused with a delicate 

 salmon-pink, which disappears soon after death. 



Adult female nuptial. Similar to the male plumage. 



Adult winter, male and female. Resembles the nuptial 

 plumage, but the forehead, and the back of the neck are 

 nearly white streaked with black. 



Immature, male and female. Head barred with black 

 and white ; back, wing-coverts, and tail, marked w T ith 

 angular black lines. 



BEAK. Black, except the tip which is pale yellow. 



FEET. Black. 



IBIDES. Blackish-brown. 



AVERAGE MEASUREMENTS. 



TOTAL LENGTH 15 in. 



WING 12 



BEAK ... ... ... ... 2'5 ,, 



TARSO-METATARSUS ... ... 1*2 



EGG 2 x 1*5 in. 



ROSEATE TERN. Sterna dougalli (Montagu). 



Coloured Figures. Gould, ' Birds of Great Britain,' vol. v, pi. 

 71 ; Dresser, ' Birds of Europe,' vol. viii, pi. 581 ; Lilford, 

 ' Coloured Figures,' vol. vi, pi. 7 ; Booth, ' Eough Notes,' 

 vol. iii, pi. 33. 



To Dr. MacDougall, of Glasgow, is due the credit of 

 having first identified this species on the Cumbrae Islands 

 in the Firth of Clyde. Selby subsequently (about 1825) 

 found ' a numerous colony ' breeding on the Fame Islands, 

 which are still visited, though in small numbers. Some 

 years ago the Eoseate Tern was more widely distributed as 

 a spring-migrant ; several former nesting-stations are now 

 deserted, the birds having been driven away in many cases 

 by persistent persecution. 



