The union's Glamorganshire county officer, Adrian Evans, said in one case, an FUW member had a sky lantern land in a barn.

BBC: Wales' chief vet backs warnings over sky lanterns

Last year, a barn owl was found dead after apparently becoming trapped in a lantern on a farm in Berkeley.

BBC: Gloucestershire NFU welcomes Chinese lantern inquiry

"It could very well have set the barn and its contents of hay and straw on fire as the lantern was still smouldering, " he said.

BBC: Wales' chief vet backs warnings over sky lanterns