CASPIAN TERN. Sterna caspia. 



Rare spring and autumn migrant to the east coast of England; less than 

 a score authentic records. Cireumtropical species ; summer visitor to the 

 coasts of Denmark and South Europe. Resident on the coasts of tropical 

 Africa, South Asia, Australia, and New Zealand. Summer visitor to 

 subarctic North America, wintering in subtropical North America. 



SANDWICH TERN. Sterna cantiaca. 



Summer visitor, breeding very locally in some numbers. Breeds on 

 the coasts of Denmark, and the shores of the Mediterranean, Black, and 

 Caspian Seas. Winters on the west and north coasts of Africa, and the 

 shores of the Arabian Sea. In America breeds on the coasts of the 

 Atlantic States, wintering on the Atlantic coast of tropical South America. 



GULL-BILLED TERN. Sterna anglica. 



Rare spring and autumn migrant ; a score English and one Irish record. 

 Summer visitor to Denmark, South Europe, Turkestan, Cashmere, and 

 South Mongolia. Winters and is locally resident in North Africa and 

 tropical Asia. In North America breeds on the temperate and tropical 

 shores of the Atlantic ; winters on the east coast of South America. 



COMMON TERN. Sterna hirundo. 



Common summer visitor to many parts of the coast. Breeds in the 

 temperate region of the northern hemisphere from the Azores west to the 

 Great Bear Lake, and east to the Caspian Sea. Winters on the tropical 

 shores of the Atlantic Ocean and the Arabian Sea. 



ARCTIC TERN. Sterna arctica. 



Common summer visitor to many parts of the coast. Circumpolar 

 soecies, breeding in the Arctic and Subarctic Regions of both hemispheres. 

 Winters on the tropical and subtropical shores of the Atlantic. 



ROSEATE TERN. Sterna dougalli. 



Rare summer visitor; bred in a few localities half a century ago. Cir- 

 eumtropical species resident on the coasts of many tropical islands. 



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