LARIDA—TERNS. 281 
tail have dark ends ; the primary quill-feathers are also dark ; 
all the under surface of the body pure white ” (Saunders). 
Distribution: Breeds on the Danish and Baltic coasts 
and in the Mediterranean region. Found in Asia from the 
Caspian to China, and inhabits also the coasts of Australia, 
New Zealand, Africa, and North America. 
Habitat: The sea-coast, not retiring far inland. 
SANDWICH TERN. 
Sterna cantiaca Gmel. 
Adult (Summer): Cheeks, neck, ¢ac/ and under parts 
white, on the latter often a flush of delicate pink; ead above 
the eyes, d/ack, feathers of occiput elongated into a loose 
plume, back and wings pearl-grey, ends of secondaries and 
upper primaries almost white ; longest primary slate-grey with 
a white shaft ; d2// black, tipped with yellow ; legs and feet black. 
Length 15 to 1575 inches; culmen 1°9; wing 10°5 to 12; tail 
6°75; tarsus 1. 
Adult (Winter): Very similar, but top of head white, 
spotted and streaked with black. 
Young: Back varied with pale brown and black; tail 
brown, ashy towards the base and white-tipped ; bill and legs 
dark brown, the former paler at base beneath. 
Distribution : Breeds in Northern Europe (including the 
British Isles) ranging southward to the Cape of Good Hope 
and Bay of Bengal in winter. Found also along the Atlantic 
coast of America as far south as Brazil. 
Habitat : Similar to that of S. caspia. 
ROSEATE TERN. 
Sterna dougalli JZont. 
Adult (Summer): Top of head black ; back and wings 
delicate grey, upper tail-coverts washed with grey ; outer webs 
of primaries and a narrow streak next the shaft on inner webs 
dark grey, and droadly margined with white, which is apparent 
on the tips ; plumage otherwise white, “ged strongly on the 
