Has been treated as conspecific with A. rimitarae and A. taiti, but basic differences in sequence and pattern of leucistic plumage among the three taxa suggest differentiation at species level; present species and A. taiti are sister taxa, but A. rimitarae belongs to a separate clade#R. Monotypic.
Pitcairn, in Pitcairn Is (S Polynesia).
Food and feeding
Status and conservation
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