J. F. Gmelin, 1788,
Queen Charlotte Sound, New Zealand.
Has in the past been placed in separate genus, Nesierax, or in Hieracidea with F. berigora, to which most closely related, but related also to other Australasian and Gondwanan hobbies. Form pottsi previously regarded as race or even separate species on basis of size and plumage characters, but differences related to age and sex. Species occurs as three morphologically and ecologically distinct populations, with separate distributions: “Bush form” (North I and NW South I) is generally smaller than “Eastern form” (open areas of most of South I), with “Southern form” (extreme SW South I, Stewart I, Auckland Is) intermediate#R; not formally recognized as races but, if found to be taxonomically distinct, names ferox and australis are available for, respectively, Bush and Southern forms#R. Currently treated as monotypic.
New Zealand: North I, South I, Stewart I (probably extinct#R) and Auckland Is.
Food and feeding
Status and conservation
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