Around three quarters of Britain's butterfly species have dropped in numbers during the last 30 years, even though the weather has changed to suit them.

Butterflies like hot weather, and the change in the global climate should have helped them.

Farms replace their habitat

But the number of butterflies in Britain has fallen, mainly because farms have been built where wild meadows, ancient woodland and moors used to be.

These are the types of land where butterflies like to live and breed, but with the land disappearing, the butterflies have been dying out.