Thalassarche cauta steadi
Foveaux Strait, New Zealand.
Until recently considered conspecific with T. cauta, T. eremita and T. salvini (see latter two below); in past, was often treated as a synonym of cauta, and normally still considered conspecific#R#R; indeed, differences from cauta are small (genetic distance only 0·2%#R), involving greater size (on basis of published evidence#R, effect size for wing 2.12, score 2); no yellow at base of bill of adult vs typically yellow bill base#R#R) (2); paler grey cheek (1); slightly later breeding season (Nov–Dec vs Sept–Oct) (no score accepted here). A score of 5 suggests subspecies status, but taxon accepted by ACAP (Agreement on the Conservation of Albatrosses and Petrels) as a full species, largely on account of earlier genetic studies#R#R; pending further clarifications, this arrangement provisionally and precautionarily accepted here. Monotypic.
S Atlantic and S Indian Oceans to Australasian waters, breeding in Auckland and Antipodes Is.
Food and feeding
Status and conservation
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