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''Coracias'' is a genus of the rollers, an Old World family of near passerine birds related to the kingfishers and bee-eaters. They share the colourful appearance of those groups, blues and browns predominating. The two outer front toes are connected, but not the inner one. These are insect eaters, usually catching their prey in the air. They often perch prominently whilst hunting, like giant shrikes. The name is from the Ancient Greek ''korakías'' (), derived from ''korax'' (, ‘raven, crow’). Aristotle described the ''coracias'' as a bird as big as a crow but has a red beak, which some believe to be the chough.〔(Greek Word Study Tool )〕 The species in taxonomic order are: * European roller ''Coracias garrulus'' * Abyssinian roller ''Coracias abyssinicus'' * Lilac-breasted roller ''Coracias caudatus'' * Racket-tailed roller ''Coracias spatulatus'' * Rufous-crowned roller ''Coracias noevius'' * Indian roller ''Coracias benghalensis'' * Purple-winged roller ''Coracias temminckii'' * Blue-bellied roller ''Coracias cyanogaster'' ==References== * ''Kingfishers, Bee-eaters and Rollers'' by Fry, Fry and Harris, ISBN 0-7136-8028-8 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Coracias」の詳細全文を読む スポンサード リンク
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