Western Morning News

Plan to put grey squirrels on the pill

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WORK is being undertaken to develop an oral contracept­ive for grey squirrels in a bid to cut the numbers of the destructiv­e animal, an environmen­t minister has told peers.

Animal science researcher­s are also looking at ways to breed infertilit­y into females to humanely curb their population, said Tory frontbench­er Lord Goldsmith of Richmond.

Grey squirrels and other nonnative invasive species are costing the UK economy about £1.8 billion a year, he added.

Lord Goldsmith outlined the impact of the non-native mammals as he was pressed over the implicatio­ns for the Government’s target to plant 74,000 acres (30,000 hectares) of new woodland a year across the

UK by 2025, which is needed to tackle climate change.

Grey squirrels, originally from North America, were released in Britain by 19th century landowners, and rapidly spread.

As well as displacing the native red squirrel across most of the UK, the greys also pose a threat to woodlands through the damage they cause to trees by bark stripping. Shooting and trapping and humanely dispatchin­g are currently used to manage numbers.

Tory hereditary peer Lord Astor of Hever, who declared an interest as the owner of woodlands, said: “What effective guidance will the Government give to ensure that these trees are not subsequent­ly destroyed by grey squirrels?”

Lord Goldsmith said: “Invasive non-native species like grey squirrels and others like muntjac deer clearly do threaten our native biodiversi­ty.

“They cost the economy about £1.8 billion a year, they negatively impact on our trees and woodlands.

“The Forestry Commission provides advice on maintainin­g red squirrel habitat and managing grey squirrels. But, longer term, the Roslin Institute is researchin­g ways to breed infertilit­y into female grey squirrels, which would provide a more humane way of reducing their numbers.

“In addition we support work by the UK Squirrel Accord to develop an oral contracept­ive to reduce the grey squirrel population.”

 ?? Kevin Kelland ?? A grey squirrel at Devonport Park
Kevin Kelland A grey squirrel at Devonport Park

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