Stalking the Wild KiwiBy David T. SchallerChapter One |
Imagine a bird that cannot fly. Long ago its wings atrophied to matchsticks. Its hollow bones filled with marrow. Its rump became a feathered knob, as if the tail simply fell clean off one day.
Its skinny beak looks like Pinocchio's--eight inches long (on a bird the size of a chicken), with nostrils at the tip rather than at the base. It plunges that bill deep into the dirt, sniffing out worms and grubs and then snuffling to clear the dirt from its nose. Its thick legs and scaly, clawed feet ward off enemies with a swift, sharp kick. Because it roams only at night, its weak eyes are virtually useless--the bird must rely on a keen sense of smell and cat-like whiskers to find its way.
This is the kiwi, a vestige of prehistory preserved in the hollows and crannies of New Zealand's primitive bush.
I tried to change her mind. New Zealand, I said, was a long way to go to see fields speckled with sheep and orchards drooling with kiwifruit. New Zealanders run a sedate, honest country. They don't build cathedrals. They don't stage coups. They don't even permit racial friction between the white Europeans and the polynesian Maori. New Zealand is like England without the history, the culture, or the English. "How about Pakistan?" I said.
But she insisted. For ten years she had harbored a desire to go see a kiwi. Here was her chance.
The notion of a trip dedicated to birdwatching struck a chord of nausea inside me. I had always thought of birdwatchers as the kind of people who stuck out their little fingers when they drank tea. "I say, dear, is that a chestnut-sided warbler or a bay-breasted warbler?" Birdwatchers fawned over their life lists. Birdwatchers could derail a road trip whenever they saw a marsh rotting by the side of the highway. Birdwatchers were tedious conversationalists, like Civil War reenactment buffs without the costumes.
But I admitted that whatever notions I had about birdwatchers ought not reflect badly on birds themselves. After all, I don't hold deer responsible for hunters, or Buckingham Palace guards for obnoxious tourists. The kiwi barely qualified as a bird anyway; it seemed more like a relic of another epoch, an ancient beast living in the present.
Spurred on by the sheer weirdness of the bird, I began reading about New Zealand, only to discover what an extraordinary land it was. Like Noah's Ark, it was a repository of primeval nature, sailing across the sea, preserving the flora and fauna of a prehistoric continent called Gondwanaland.
For 500 million years, Gondwanaland was an enormous supercontinent, composed of Australia, Africa, India, South America, and Antarctica as well as New Zealand. It floated as a piece on the earth's molten mantle until, about 100 million years ago, the forces of plate tectonics pulled it apart. Rifts opened up within Gondwanaland, and New Zealand eventually split off on its own and headed north.
At the time (about 80 million years ago), dinosaurs dominated Gondwanaland, while the state-of-the-mammal was a species of tiny shrew-like creatures. It lived only in certain regions of Gondwanaland which, as it happened, did not include New Zealand. When plate tectonics tore New Zealand away from Gondwanaland, the shrew-things missed the boat. For millions of years, they and all their descendents--the plethora of mammals we know today--were kept at bay by the vast Pacific Ocean surrounding New Zealand. This isolation turned these islands into an alternate world, a laboratory devoted to the proposition: what if mammals never evolved?
New Zealand became an exclusive club for those who could fly. The wind carried airborne spores, insects, and two species of bat to New Zealand, but the species that came to dominate the islands were the descendents of the dinosaurs and the masters of flight--the birds.
Once in, however, birds found flight an expensive encumbrance, required for club membership but never needed again. Without humans, cats, wolves, rats or other preying mammals to threaten them, flight lost its appeal. Unable to justify the tremendous energy necessary to get and stay aloft, many birds developed new specializations and skills more suited to their environments, often losing the ability to fly at all.
In this avian wonderland, the birds of New Zealand flowered into marvelous, often preposterous shapes and sizes to take advantage of every ecological niche. For tens of millions of years, the islands danced with fearless, often flightless birds that filled the forests with life and song. A penguin grew as tall as a person. A mysterious parrot slept all day and awoke at midnight to perform a slow, courting dance for its mate. A skyscraper of a bird, too big to ever fly, browsed on leaves twelve feet off the ground. A giant eagle with an eight foot wingspan preyed on whatever it found appealing, probably inspiring ancient Maori stories of a terror bird that soared down from the mountains and snatched up people. And the kiwi--a relatively small bird in comparison but utterly peculiar nevertheless--snuffled its way about the forest floor.
The two main islands of New Zealand, along with several smaller offshore isles, stake out a remote corner of the South Pacific. Australia is the nearest continent, over 1,200 miles away. This isolation kept humans away until quite recently--Polynesians found it first, in 800 A.D., followed by Europeans a thousand years later. Both races quickly began ravaging the island ark, which had erected no defenses against the habits of mammals. The past millennium has seen the classic tale of man versus nature played out again, this time staged amongst some of the most beautiful of landscapes and performed by some of the strangest creatures on earth.
This history lesson clashed so dramatically with my stereotype of a bland New Zealand that the two contrary images stuck stubbornly in my head, like a checkbook that wouldn't balance. How could a country with such an extraordinary past inspire such a bovine reputation? In the contrast lay something I had to understand.
The kiwi, having survived not only eons of prehistory but a thousand years of human settlement, seemed an appropriate symbol of New Zealand's bizarre natural environment. I began thinking of it as a canary in a coal mine, or what biologists call an "indicator species"--a key species whose own health reveals the health of the entire ecosystem. By seeking the bird, Susan and I might not only see the bird itself but also discover for ourselves how the fantastic ecology of primeval New Zealand had fared in the modern world.
From this angle, New Zealand sounded like the most intriguing place on earth. We began laying plans to go.
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