Water voles are almost extinct – could glitter save them?

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Rob Parry, chief executive of INCC, said his team had consulted with vets to ensure the edible and biodegradable glitter – the type used to decorate cakes – would not be harmful to the semi-aquatic creatures.

"It's something that we've done in nature conservation before for other species, for badgers in particular where we use pellets to put in with peanuts, which badgers love," said Mr Parry.

"So we've taken that idea and scaled it down to water vole size, which means using glitter."