(syn. Passerculus Ϯ Baird's Sparrow P. bairdii) Gr. κεντρον kentron  spur; ονυξ onux, ονυχος onukhos  claw; "CENTRONYX, Baird.  ... Hind toe very large; the claw rather longer than its digit, and in its elongation resembling Plectrophanes, but more curved; the digit and claw together rather longer than the middle toe and claw" (Baird 1858). Var. Centhronyx.

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 www.hbw.com on 19 January 2019).