My Kune kune pigs live perfectly happily alongside my chickens and my ducks. We have only ever had one incident of agression from one of the pigs when a duck was stealing his food. Other than that they get on fine. Pigs are now fed before the birds are let out in the morning and after the birds have gone to bed in the evening. The ducks follow the pigs everywhere gobbling up all the worms and beasties the pigs uncover whilst rooting around. They will often all shelter together in the pig hut when it's raining.