Atiu Island, in Cook Islands.
Has been considered closely related to A. leucophaeus, or even to be conspecific with it, but apparently differs in nest habits. May prove to be merely a race of A. spodiopygius, which is very similar in size and plumage and which occurs not far from Cook Is. Monotypic.
Atiu I (S Cook Is).
Food and feeding
Status and conservation
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