The donkeys are mysterious, they live by their own rituals and signals. One day they eat at their feeder, the next they like the sheep feeder. Donkeys love to do whatever is not expected of them, whatever you don’t want them to do, everything has to be their own idea, they don’t really care what your ideas are. We have learned to roll with this, if they want to chase the sheep away today and switch feeders it’s fine, go ahead with it.