(syn. Tetrao Ϯ Great Capercaillie T. urogallus) Gessner 1555, used the terms "Grygallus major" and "Grygallus minor" for the hen Great Capercaillie and hen Black Grouse respectively, thinking them to be separate species from the cock birds. "Grygallus" was his classical interpretation of a local Swiss name Grügelhahn (Gr. γρυζω gruzō  to grumble; L. gallus  hen); "TETRAO, L.  Urogallus, Briss. Grygallus, Gesn.    T. Urogallus, L., Pl. enl. 73, 74" (G. Gray 1840).

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 12 December 2018).