newt

As night falls over the water, Alpine newts begin their silent hunt.

Creatures, including bats, dormice and great crested newts, have also been moved.

"We did so many surveys, on the trees, on great crested newts, on the birds of prey and we have an on site archaeologist to make sure we don't damage anything we come across."

They screened existing AAVs to find what was suitable for amphibians and optimized the infecting strategy eventually developing a "how-to guide" for frogs and newts.

Many species are legally protected, such as badgers, bats and great crested newts, and Natural England has to issue a licence before any work can take place that could harm them.