weka(n = noun.animal) maori hen, wood hen - flightless New Zealand rail of thievish disposition having short wings each with a spur used in fighting;
is a kind of rail
is a member of gallirallus, genus gallirallus

   A New Zealand rail (Ocydromus australis) which has wings so short as to be incapable of flight. [1913 Webster]

weka, n. any flightless New Zealand rail of the genus Gallirallus.

Etymology:
Maori: imit. of its cry