I have 5 dogs also. Our black lab is really in love with the Chickens and he has managed to get two of them, which did not help. He paces the fence and watches them very intently. I have gone the extra mile to ensure that the chickens don't get to him. And I am working on him with obedience. He is a rescue that we got at 1.5 years old. He is a hand full / bundle of energy, but I am convinced he will come around. Although I will never trust him or any of my dogs alone with the chickens.
Persistence pays off. If you have access to a good trainer, they may have some good ideas also.
Persistence pays off. If you have access to a good trainer, they may have some good ideas also.