rara avis (Rarissima avis)
rare bird (very rare bird)
Notes
An extraordinary or unusual thing. From Juvenal's Satires: rara avis in terris nigroque simillima cygno ("a rare bird in the lands, and very like a black swan").
rare bird (very rare bird)
An extraordinary or unusual thing. From Juvenal's Satires: rara avis in terris nigroque simillima cygno ("a rare bird in the lands, and very like a black swan").