a rare bird
a rare birdLITERARY
If you call someone or something a rare bird, you mean that they are very unusual. Diane Johnson's book is that rare bird, an American novel of manners. Note: `A rare bird' is a translation of the Latin expression `rara avis', which was used by the Roman writer Juvenal in the 2nd century AD to describe a black swan. At the time, black swans were unknown, although they were later discovered in Australia.