I have a bunch of skip Laurel bushes in my backyard. The chickens absolutely love to hang out under there, and make a nice big dust bath areas. The bushes were there long before the chickens. But now I find out that they are poisonous, the leaves and the berries. I've had chickens for three years now and as far as I know they haven't gotten poisoned. Some people have said that chickens know what plants to avoid so am I just being paranoid? To be safe should I tear out the skip laurels and plant something different? And if so what would you suggest? I live in Eastern Washington state. I would prefer some sort of Evergreen or something that makes a nice screen.