The Collaborative International Dictionary of English v.0.48:

Ortygan \Or"ty*gan\, n. [Gr. ?, ?, a quail.] (Zool.)
   One of several species of East Indian birds of the genera
   Ortygis and Hemipodius. They resemble quails, but lack
   the hind toe. See Turnix.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ortygan
    n 1: any of several East Indian birds