● L. percnopterus  vulture  < Gr. περκνοπτερος perknopteros  vulture  < περκνος perknos  dusky; -πτερος -pteros  -winged  < πτερον pteron  wing; "40. VULTUR.  ...  Perenopterus.  6. V. remigibus nigris margine exteriore (præter extimas) canis.  Perenopterus s. Gypaëtos. Aldr. orn. t. 2. c. 10. Raj. av. 8.  Falco montanus ægyptiacus. Hasselqv. act. Stockh. 1751. p. 196.  Vultur, Percnopterus, capite nudo, gula plumosa. Hasselq. itin. 209.  Vultur  niger. Raj. av. 9.  Vultur bæticus. Raj. av. 10.  Vultur albus. Raj. av. 10.  Vultur aquilina. Aldr. orn. Alb. av. 2. p. 3. t. 3.  Vultur fulvus, bætico bellonii congener. Raj. av. 10. Habitat in Ægypto.  Mas totus albus: Remigibus atris margine exteriore canis, exceptis duabus primis unicoloribus: Femina tota fusca: Remigibus quatuor extimis concoloribus. Rostrum atrum cera flava. Hasselqv. Nares perpetuo stillant. RajPurgat Cairi terram a cadaverum fœtore, stipendiis allectus. Hasselq." (Linnaeus 1758); “The specific name of the Egyptian Vulture was spelt perenopterus, not percnopterus, by Linnaeus. This is obviously a misprint, as he quotes from Aldrovandus and Ray, both of whom spelled the word percnopterus” (BOU 1915). This epithet is the sixth name and fourth autochthonym in avian nomenclature (Neophron).
● Gr. περκνος perknos  dark; -πτερος -pteros  -winged (syn. Gyps fulvus, syn. Xenoctistes rufosuperciliatus).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2020). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2020). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 21 February 2020).