Cape of Good Hope.
Until recently was treated as conspecific with D. dabbenena and, indeed, also with D. antipodensis and sometimes D. amsterdamensis (which see). Type specimen lost, but probably not referable to population on Tristan da Cunha, as was traditionally held; as a result, birds of Tristan now labelled as D. dabbenena, while the name exulans is currently applied to populations formerly listed as chionoptera. Monotypic.
Southern Ocean, breeding from South Georgia E to Kerguelen, Heard and MacDonald Is and Macquarie I.
Food and feeding
Status and conservation
Only subscribers are able to see the bibliography. Login or Subscribe to get access to a lot of extra features!