But why does the Channel Island have no native red squirrels - and why does it lack other small species like moles, badgers ...

Hitchin Squirrel Rescue said it was prepared to look after a grey squirrel found in Guernsey. Pictured is one of the animals the centre cares for A non-native invasive grey squirrel on the loose ...

But why does the Channel Island have no native red squirrels - and why does it lack other small species like moles, badgers and foxes, as well as snakes and toads? Dr Ellie Scopes, a population ...