Astrapian sicklebill

The astrapian sicklebill, also known as the green-breasted riflebird, is a bird in the Paradisaeidae family that was proposed by Erwin Stresemann to be an intergeneric hybrid between an Arfak astrapia and black sicklebill, an identity since confirmed by DNA analysis.

History
Only one adult male specimen of this hybrid is known, held by the American Museum of Natural History, and presumably deriving from the Vogelkop Peninsula of north-western New Guinea.