Pigging Out
Friday, February 19th, 2010Wild boars have come to Vermont.
No, this has nothing to do with the campaign for governor. These are the O-A-R boars – the four-footed, perhaps 500-pound rooters — not the O-R-E bores – the two-footed, 100-250-pound preeners.
In the interests of scientific precision, let’s acknowledge that these latest Vermont boars are possibly not even full-fledged boars (Sus scrofa in the official nomenclature) but some combination of boar and the regular old pig (sus domestica).
Boars are not native to Vermont. Neither, probably, are cattle (bos), of which there are many more, but there are at least two major differences between the two species: (1) Cows do less damage (although they do their share); (2) cows were brought to Vermont on purpose.
Wild pigs do a lot of damage to gardens, lawns, streams, fish, other wildlife and some tame life, primarily livestock and pets, though possibly also their human owners. As to the wild pigs now (apparently) resident in the state, they were not brought here on purpose.
They emigrated from New Hampshire, where they are not native, either, but where they (sort of, and no insult intended toward the fine citizens on the far side of the Connecticut) belong.
Details shortly, but first let’s make sure this post does not cause panic. Vermont is not being over-run by wild swine. According to the generally recognized authority on the subject, John J. (Jack) Mayer, Jr., there are not even enough wild hogs in Vermont to constitute a breeding population.
Yet.
And there may never be, said Mayer, who is a research scientist and manager at the Savannah River National Laboratory in Aiken, S.C., and co-author (with I. Lehr Brisban, Jr.) of Wild Pigs in the United States: Their History, Comparative Morphology, and Current Status (University of Georgia Press, 1991).
“The advantage Vermont will have is the weather,” Mayer said. “Piglets may not be able to survive a cold winter.”
The adult wild hogs, he said, rarely live for long, either, because they are so eagerly hunted.
“Word gets out (that there’s a wild pig in the area) and typically it doesn’t last very long. So far, Vermont really hasn’t had a sustaining population,” he said.
But Michigan, where it’s comparably cold, does, Mayer said. So do four western Canadian provinces which are colder than Vermont and where the wild pigs, Mayer has been told, burrow into hay bales or make snow tunnels to survive a winter night.
But the animals are rapidly expanding their range, so much that the whole country faces what Mayer calls “a pig bomb.” As recently as mid-2008, wild pigs lived in 37 states. Now Mayer estimates 44, all but Connecticut, Delaware, Montana, Rhode Island, Utah, and Wyoming.
Vermont’s boar population is low, fewer than 100, Mayer estimates, all of them in Windsor County, having swum across the river from their New Hampshire home.
No, wild hogs are not native to the Granite State, either. They were brought there, the first of them more than 100 years ago, to live and be hunted in the immense fenced “park” created in 1886 by Austin Corbin, the founder of the Long Island Rail Road.
After enclosing some 9,500 hectares (about 23,000 acres) with 58 kilometers (almost 35 miles) of fence, buried to make it “wild boar-proof,” Corbin bought 1,000 Black Forest wild boars from Germany.
The problem was that the fence was not people-proof, and then and now, according to Mayer, some of the locals, angry that all this land and all that game was available only to Corbin’s fellow-millionaires, kept tearing holes in the fence. Lately, he said, “vandals have been cutting holes you could drive a truck through.”
It is from those gaps in the fence, Mayer said, that according to his sources (whom he will not name; some of them may be among the fence-cutters) several wild hogs have swum across the Connecticut, probably making landfall somewhere between Windsor and Hartland.
Those travels illustrate how relentless and resilient these animals can be. The eastern edge of Corbin Park is about eight miles from the river, and while the area is not densely populated, it isn’t wilderness, either. Those hogs made their way to and across the Connecticut through human habitat.
Should they establish a breeding population here, the consequences would be consequential, and possibly catastrophic. It isn’t that boars are human-eating killers. There would be no need, Mayer said, “to keep the kids home from school.”
But they are voracious eaters who root into the ground everywhere—gardens and farm fields. They will eat, Mayer said, anything “ if they can get their mouth around it — fawns, goats, lambs.”
And pets. Mayer said wild hogs don’t like dogs, and some of the rare confrontations between the animals and humans have arisen when a hog attacked a dog being walked by its owner.
Boars are as ravenous about water as about food, Mayer said, and will root up a lawn’s underground sprinkling system.
They also damage trout fisheries. By rooting, eating, and excreting along riverbanks, they pollute the water and, by removing vegetation, cause erosion that covers trout redds (spawning areas) with silt.
Bears, bobcats, and coyotes eat wild hogs, but not enough “to have any impact on the population,” Mayer said. That’s why, once they establish a breeding population, they are almost impossible to eradicate.
“Hunters will take a certain numbers,” he said. “But hunting will only take 10-to-50 percent of a wild pig population. To control it, you need to take 70 percent out of the population ever year. Lethal removal just isn’t going to do it.”
Besides, not everyone wants to get rid of wild hogs. Hunters don’t, and hunters are a potent lobby in every state capital, including Vermont’s. The boars are “fun to hunt, good to eat and make a really impressive trophy on the wall,” Mayer said.
A wild pig population, then, creates a political problem as environmentalists, farmers, gardeners, and hikers favor extirpating them while hunters fight to keep enough of them around to hunt.
Well, that’s when happens when folks mess around with nature.
As everyone does and must. Agriculture is messing around with nature, and imposes some negative impacts on the natural world. But it’s necessary. Shipping wild animals far from their native habitat so that a few folks can pay big bucks to hunt them is not. There being no such thing as an indestructible fence, such shipments should perhaps be discouraged, or at least controlled.
Raising, of course, the matter of Pete the Moose (see the August 28 post, “The Moose is Not Loose”), about which a progress report. There has been no progress. Maj. Dennis Reinhardt of Fish and Wildlife’s enforcement division, said Fish and Wildlife officials are “continuing to meet Mr. (Doug) Nelson (on whose farm Pete is being illegally confined) and the Department of Agriculture “trying to resolve it amicably.” But Reinhardt made clear that the department is convinced that keeping the moose “absolutely is not legal.”
Correction: Terry Macaig represents Williston as a Democratic member of the House, not Burlington.






