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A deadly predator could save the UK’s threatened red squirrels

By Helen Thomson

7 March 2018

91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

A pine marten in the Scottish Highlands

Eric Woods / FLPA

YOUR enemy’s enemy is your friend. The UK’s endangered red squirrels are getting an unexpected helping hand – from predators that kill the grey squirrels that threaten them.

are native to North America. They got settled in the UK in the 19th century after being brought over by a silk manufacturer, and soon began to suppress the native . They are bigger, bolder and eat a more varied diet, and also carry a virus deadly to red squirrels. Today, they have driven red…

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