My donkey could really care less about the chickens, though he watches everything with an eagle eye, and the birds will learn to get out of the way. As with anything else, I would start slow and supervised, make sure there are no problems. As said before, be VERY careful with dogs. They usually hate dogs, mine does, my dog isn't allowed in the pasture ever, my farrier has to lock his dog in the truck while here or he can't get near him. There is a donkey farm near me, they have tons of donkeys, a zebra, and chickens are all over. She says they lose chickens to predators, not donkeys. Donkeys don't forget..... so keep that in mind when handling them.