Impressive, but that penguin’s still extinct; so it hasn’t really been ‘rediscovered’ in the same sense as the tarsier.
That article deserves some kind of award for most unintentionally confusing penguin-related news feature. The picture is of a different species of penguin that relocated to New Zealand after the locals finished off the earlier penguin species. Now that replacement species is also endangered.
Seriously, New Zealand: what the hell? You kill off one penguin species, Mother Nature sends you another, and you immediately begin eradicating the surrogate penguin. What is it with New Zealand and mass avicide? Listen, New Zealand: Haast’s Eagle is dead. You killed it. You don’t need to be afraid of birds anymore. Nothing is going to come screaming out of the sky and eat you. You can stop killing the birds now.