Before our first trip to New Zealand, March of 2001, we did a lot of research because the plan was to drive up the South Island from the southern tip to the northern, then ferry across to the North Island. We consulted three different Travel books and they all said to be sure to get the rental car insurance and specifically mentioned the Keas.
Sure enough, when we pulled over to a scenic pull over where other cars were, on the way to Milford Sound, there were a couple of Keas attacking a car windshied rubber gasket. I shooed them away, only to see them return. They are really beautiful, mischievous creatures.