Westland Black Petrels
Paparoa National Park contains the world's only nesting area for Westland black petrels, a very rare sea bird. Their colony is on the cliffs just inland of the coastal highway south of Punakaiki. The petrels have the habit of all returning en masse, right at dusk, from their daily feeding trips out on the ocean.
One of the coolest experiences of my entire life was hiking into a bat cave outside of Santiago de Cuba and sitting at the entrance as the bats swarmed out, literally funnelling up out of the cave in an enormous, thick tornado of bats. As they got out of the mouth of the cave where we were sitting, some of them broke ranks from the swirling mass and flew around us and into us (including up the boys' baggy shorts!). I've wondered since then how they manage to catch insects if they can't even tell when they're about to run into an object as big as me. But obviously they manage somehow. And oh, what an awesome experience to sit there with bats all around us, above us, below us, on us, and still more coming up out of the cave! So I was picturing the petrels something like that, only I figured that I probably wouldn't be right in the midst of them. But definitely an enormous rushing cloud of them, no doubt. I couldn't wait!
So at sunset, I drove down to the Westland Dolomite Mining Company buildings across the highway from the Nikau Scenic Reserve. One might expect that the petrels would nest on the scenic reserve side of the highway, but that's the coastal side. They actually nest up behind the old mining buildings. I thought that was just a bit ironic. If you park beside the highway in the driveway to the mining buildings, the petrels fly right overhead to their nesting area on the cliffs.
Despite being right on the road, it was very peaceful sitting there and watching the birds fly overhead. As I mentioned, I was expecting a full-on rush to follow the slow mass of petrels that I was watching, turning circles above my head, lazily making their way back toward their nests. Darkness came, but the huge cloud of petrels that I was expecting did not. I waited for another hour or so, sitting the on hatchback of my car and then moving on to doing calf raises, balancing exercises, arm strengtheners, leg lifts... very productive relaxation time!
When I talked to the guy at the DOC office the next morning to check that I'd seen the extent of the return and hadn't happened to miss an enormous flock of petrels swooping overhead, he confirmed that what I had seen was the extent of it. He told me that at this time, mid- to late April, the petrels are just starting to get into their full-on flocks coming in. The flocks won't get to be much bigger than what I saw. It was good to know that I'd seen what I'd set out to and hadn't missed thousands of petrels swooping by behind my head as I turned around to look for them in the opposite direction!
My visions of the bird version of our Cuban bat cave were a little out of proportion with reality on this one. But it was still cool and totally worthwhile, sitting on the back of my car, watching the darkness gather, picking out pictures in the clouds and listening to the petrels calling from their homes in the cliffs behind me. Definitely a good evening.