Alien invaders: American mink removed from Scotland

Scientists have carried out one of the largest ever eradications of an invasive species - the American mink.

The predator first arrived in the UK in the 1950s from America to be farmed for its fur.

But when some escaped - or were released - they spread across the whole country and have had a devastating effect on local wildlife.

Now conservationists have cleared 10,000 sq km of land in north-east Scotland of mink.

Here, biologist Jamie Urquhart from the River Don Trust shows science reporter Rebecca Morelle how the mink are caught.

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