Family LARID.^. 



COMMON NODDY. Anous stolidus. 



Accidental visitor ; only one British record (two examples shot together 

 in Ireland) . Circumtropical species^ breeding on many tropical islands in 

 both hemispheres. 



BLACK TERN. Sterna nigra. 



Rare spring and autumn migrant ; bred in the Eastern Counties thirty 

 years ago. Breeds in Central and South Europe and Turkestan. Winters 

 in North Africa. Represented in America by a form only subspecifically 

 distinct. 



WHITE-WINGED BLACK TERN. Sterna leucoptera. 



Accidental visitor; a score EngKsh and four Irish records. Breeds 

 from the basin of the Mediterranean eastwards to South Siberia and 

 North China. Winters in tropical Africa and South Asia. 



WHISKERED TERN. Sterna hybrida. 



Accidental visitor ; only four English records and one Irish. Breeds in 

 South Europe, North Af rica, Turkestan, North India, and South Mongolia. 

 Winters in tropical Africa and South Asia. A tropical form said to be 

 indistinguishable in summer plumage breeds in North-east Australia. 



SOOTY TERN. Sterna fuliginosa. 



Accidental visitor; only three British records, all English. Circum- 

 tropical species, breeding on many tropical islands in both hemispheres. 



BRIDLED TERN. Sterna ansstheta. 



Accidental visitor; only one British record (Thames estuary) . Circum- 

 tropical species, breeding on many tropical islands in both hemispheres. 



