south Atlantic Ocean, latitude 20° S to 40° S.
Formerly considered conspecific with P. feae and P. madeira. Has sometimes been split into two subspecies, with dubia or fusca having been used for populations of S Indian Ocean, but claimed differences may be complicated by individual variation and effects of plumage wear. Rare dark morph may be result of hybridization with other species. Monotypic.
Southern Ocean, breeding at Tristan da Cunha and Gough I, Prince Edward Is, Crozet, Kerguelen and Amsterdam I, as well as Antipodes Is (SE of New Zealand). Recently found breeding on Maatsuyker I (off S Tasmania)#R.
Food and feeding
Status and conservation
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