Seriously deformed sabots

Walking round the lac de Parisot with the dogs, we saw these 5 lovely donkeys. When we got closer to give them a scratch we realised most had seriously deformed hooves/ sabots. The worse I have seen for a long time, if ever.
Does anyone know who these donkeys belong to?
Hooves left like this can make a donkey lame as well as giving extreme pain. They need a blacksmith and quickly.
I will pass the photo to the local vet Huguette and see if she knows who the owner is.
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