Sometimes placed in genus Gallirallus or Rallus. Closely related to H. philippensis, and perhaps also to H. rovianae; probably also to extinct †H. wakensis, †H. dieffenbachii, †H. pacifica and perhaps †Cabalus modestus. Monotypic.
Guam (extinct in wild).
Introduced to nearby Rota I, and recently (2011) to Cocos I (off S Guam)#R.
Food and feeding
Status and conservation
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