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No Longer Extinct, Beaver Populations in the Netherlands Now Threaten Their Dikes
They were extinct in the Netherlands in the early 19th century. But in 1988 beavers were reintroduced to the region, and now there's over 7,000, reports the Guardian. But unfortunately... Beavers are increasingly digging burrows and tunnels under roads, railways and — even more worryingly ...
"We've found tunnels stretching up to 17 metres [equivalent to 60 feet] into a dike... That's alarming," says Jelmer Krom of the Rivierenland water board... During high water, special patrols go out at night with thermal-imaging cameras to spot where beavers are active, but this method doesn't always yield the desired results. Current mitigation efforts include mesh reinforcements (as well as sealing burrows) — and also removing the thickets of willows on the riverbanks to make them a less appealing habitat.
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