(Accipitridae; Ϯ Plumbeous Hawk C. plumbea) Gr. κρυπτος kruptos  hidden; λευκος leukos  white; πτερυξ pterux, πτερυγος pterugos  wing; "Cryptoleucopteryx gen. nov.  Type species: Leucopternis plumbea Salvin, 1872.  Diagnosis: Cryptoleucopteryx plumbea is distinguished from all other buteonine hawks by the combination of an overall dark gray plumage, black tail with a single white medial band, and white underwings coverts.  ... Etymology: From the Greek crypto, meaning hidden, leuco meaning white, and pteryx, meaning a wing.  Gender feminine" (Raposo do Amaral et al. 2009).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 11 December 2018).