Diomedea exulans antipodensis
Robertson and Warham, 1992,
Antipodes Island and Campbell Island, in South Pacific.
Initially described as a race of D. exulans; later elevated to species level on basis of ecological differences, although this appears to refer only to timing of breeding, and morphological diagnosability, consisting of: adult female dark brown, pattern resembling immature plumage of other taxa, and adult male smaller with shorter bill#R. However, “there are no simple plumage features to distinguish [it] from other ‘wanderers’”#R, and some specimens indistinguishable from D. amsterdamensis#R#R; hence no scoring attempted (see also comments under D. amsterdamensis). Level of genetic differentiation reported to be low#R or relatively high#R; one work argues that each form (less gibsoni) in the exulans group represents “a distinct, evolutionarily important population for which a unique biological history exists”#R, based on natal philopatry and at-sea distribution patterns. This arrangement, although rejected by several authorites#R#R, is accepted by ACAP (Agreement on the Conservation of Albatrosses and Petrels)#R and, pending further clarifications, provisionally and precautionarily also here. Races differ subtly in morphology, and their distinctiveness as either two species or two races of one species remains unclarified#R#R#R. Two subspecies currently recognized.
Food and feeding
Status and conservation
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