Gr. γλαυκιον glaukion type of duck with glaring eyes  < γλαυκος glaukos  glaucous.
● ex “Glaucion” of Belon 1555 (syn. Bucephala clangula).

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 13 December 2018).