They've cost the country hundreds of millions in lost production but our failure to deal with rabbits has caught up with us once again. The Detail talks to Newsroom's Melanie Reid about her investigation into how the latest plague is turning into an ecological disaster.
You stop in wide open country, drinking in the views of Otago hill country.
Then you realise those hills are moving.
“I think you’ve got to see it to believe it,” says Mel Reid, “because you always hear like the ‘wave of rabbits’ or ‘the hillside moving’, but when you stand there and it’s actually happening in front of your eyes it’s quite hard to comprehend. It’s quite hard to believe. And we’re back there again.”
Reid is the editor of Newsroom Investigates, and is rolling out a series on the plague of rabbits hitting not just Otago, but swathes of small towns in the South Island and some in the North Island too.
“They’re like these giant mowing machines,” she tells The Detail today.
Seven rabbits eat as much grass as one sheep.
“What they do is they eat all the grass, and then they live underneath. So they decimate it on top and below. The best way to explain it, is that it becomes like a honeycomb. And that’s what they talk about when people fall … they walk along and they go down to their knees, or their tractors go down and they sink. And they actually change the PH of the soil. So not only do they eat all the grass, but what I think is underestimated, is how long it takes for that land to recover.”
It means dry areas like Central Otago risk being turned into dust bowls.
And rabbits will do anything to survive. They’ve climbed on the backs of sheep to get away from flooding; eaten the ears off other rabbits when food is scarce; scurried up ‘rabbit-proof’ fences to get away from hunters.
In 1997 when farmers took matters into their own hands and introduced calicivirus from Australia, it worked – wiping out an estimated 80 percent of rabbits.
“It was very effective. It feels as though in some parts people have relaxed a bit and had a bit of breathing space and haven’t kept vigilant control of the rabbits … and there’s been no real enforcement. So here we are 24 years later and the rabbits seem to have some sort of immunity to that virus now and so they’re away again.
“And they’re away in this massive wave … there’s hordes and hordes and hordes of them.”
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