SYDNEY, Nov 20: Researchers have stumbled upon the remains of a previously unknown species of penguin that pre-dates the Polynesian settlement of New Zealand nearly half a century ago.

Australian and New Zealand researchers, from the University of Adelaide and the University of Otago, were studying fossils they believed to be of the more commonly known, and now endangered, yellow-eyed penguin when DNA tests revealed they actually belonged to a new species, the Waitaha penguin.

“In the process of studying yellow-eyed penguins we accidently discovered this extinct species, which looks like it was unique to the south island of New Zealand,” Dr Jeremy Austin a senior researcher at the Australian Centre for Ancient DNA, University of Adelaide said.

“When the team started to compare the older material with the modern penguin the bones were different in size, the clearest picture is they are a bit smaller,” he said.

The Waitaha penguins’ extinction created an opportunity for the yellow-eyed penguin to subsequently colonise the New Zealand mainland from its base in the sub-Antarctic islands.

The yellow-eyed penguin is considered one of the world’s rarest penguin species, with an estimated population of 7,000 in New Zealand. It is the focus of an extensive conservation effort.

—Reuters