Fox drinking from the tadpole isolation bowl

Last year all the tadpoles in the community garden were eaten by the dragonfly nymphs so this year some have been kept in a bowl away from the pond.   We need frogs in the garden as we garden organically.  Every morning we have been surprised at how the water needs replenishing in the bowl  - now we know why.  The vixen visited the bowl 3 times during the night and the cubs did too but only because mum was there, not to drink.