Definition of "rare bird" []

• An unusual or exceptional person or thing; a rara avis. (noun)

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• "He encouraged the boys and young men to botanise and observe nature in all forms, and though he would never allow nests to be taken, or even eggs if he could help it, he would give little prizes for the noting of any rare bird or butterfly."
• "It is said that the fine pinnated grouse, now becoming a very rare bird in this State, drinks only in this way, refusing water from a vessel, or a spring, but eagerly drinking when it trickles down in drops."
• "Not that rare bird the serial killer, but garden-variety one-corpse-type murderers."