The Pelican is not a New Zealand Bird
As 10,000 Birds’ New Zealand beat writer, I sometimes should write about New Zealand birds, but today I thought I’d talk about a bird that people thought was one but almost certainly wasn’t. It’s a species that I was able to see and photograph while visiting Australia last Christmas, or at least it would have been, had it ever existed. It is one of the many species that went extinct in New Zealand, only for once it didn’t. This is the story of the pelicans of New Zealand.
Australian Pelican (Pelecanus conspicillatus) at Centennial Park, Sydney
No pelicans were recorded in New Zealand when the Europeans first arrived, and it wasn’t until 1930 that fossils of pelicans were discovered in a cave in central North Island. Gilbert Archey, who found the remains, attributed them to the Australian Pelican. Further remains were found in the 1960s, and slight variations in the pelvis and a slightly larger size led one scientist to place the New Zealand fossils in its own subspecies, and in 1981 another team, elevated the fossils to a full species, the New Zealand Pelican.
Dipping for fish
An extinct endemic form of pelican in New Zealand would have represented another family lost, like the odd form of owlet-nightjar and New Zealand’s lost members of the hawk and eagle family. But it seems the story wasn’t so clear cut. For starters New Zealand didn’t seem to have or have ever had the right type of wetlands to sustain a population of this large piscivore. And the fossils themselves were vanishingly rare. The fossil record here is actually very good for birds, but across the whole of the country the entire collection of bones of pelicans only represented seven individuals. A more thorough examination of the bones showed they fell within the natural range of Australian Pelicans, and that was indeed what they were.
So what were these Australian birds doing in New Zealand? The answer should be obvious to any birder that enjoys a bit of twitching; they were lost.The species is actually prone to that; they regularly turn up in New Guinea and the Solomon Islands. Like Snowy Owls or crossbills they are also prone to irruptions, caused by Australia’s extreme climate, that have seen birds wandering as far from Australia as Indonesia, Palau, and Fiji. And, sometimes, New Zealand.
Since New Zealand broke off from Gondwana some 70 million years ago with the ancient ancestors of the New Zealand wrens all the other birds that live here have arrived by flying across the sea. Records of vagrancy show that many species arrive but only a few species actually survive and establish. The pelican fossils found in New Zealand represent something very unusual, a prehistoric record of seven such ancient events. Pelicans may not be part of the avifauna of New Zealand, but they are certainly part of the story of New Zealand’s birds.