For many years, a white-flippered form of the little penguin found only in North Canterbury, New Zealand was considered either a separate species, Eudyptula albosignata, or just a subspecies, Eudyptula minor albosignata. Analysis of mtDNA revealed that Eudyptula falls instead into two groups: a western one, found along the southern coast of Australia and the Otago region of New Zealand, and another found in the rest of New Zealand.[4] These two groups are now considered full species: Eudyptula novaehollandiae in Australia and Otago, and Eudyptula minor elsewhere.[5]E. novaehollandiae probably arrived in New Zealand from Australia less than 500 years ago, following the local extinction of E. minor in Otago.[6]