Research from Otago University has revealed new information on a phenomena called a 'biological transition event'. That's where one species replaces another. In this case the animal in question is the Waitaha penguin. For the first time researchers have established when this penguin became extinct, and, how rapidly it was replaced by the yellow eyed penguin. Dr Nic Rawlence, from the Allan Wilson Centre for Molecular Ecology and Evolution, and the Department of Zoology at the University of Otago carried out the research
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