Source : Webster's Revised Unabridged Dictionary (1913)

Weka \We"ka\, n. (Zo["o]l.)
   A New Zealand rail ({Ocydromus australis}) which has wings so
   short as to be incapable of flight.

Source : WordNet®

weka
     n : flightless New Zealand rail of thievish disposition having
         short wings each with a spur used in fighting [syn: {maori
         hen}, {wood hen}]