(syn. Falco Ϯ Prairie Falcon F. mexicanus) L. planum  level ground, plains; Late L.  falco, falconis  falcon  < L. flectere  to curve; "This area, in northwestern Texas, includes the dry, level or rolling stretches of the Great Plains  ...  Planofalco mexicanus *  (R)  ...  *Planofalco, gen. nov.; type, and only species, Falco mexicanus Schlegel" (Oberholser 1925) (OD per Björn Bergenholtz); "The Prairie Falcon which is commonly included in Falco, and therefore considered congeneric with the Gyrfalcon, is generically distinct. As there seemed to be no name available for it, the writer has proposed Planofalco, from planum, a plain (or prairie), and falco, a hawk" (Oberholser 1974).

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 24 January 2020).