‡ (syn. Dendragapus Ϯ Theodore's Grouse D. gilli) Gr. παλαιος palaios  old, ancient; τετριξ tetrix  unknown ground-dwelling bird, perhaps a grouse.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 19 January 2019).