I have two Great Pyrenees and they really have to be trained in a different way if you want them to be LGD's. It is important for them to bond with your flock but equally important not to let them unsupervised with your flock alone until they have earned your trust. A lot of people recomend for them to no longer be a puppy. The farm you got him from had his parents to teach him not to chase or eat the chickens. When you bought him you became his parents. Both my LGD's were not left unsupervised with my herd until they earned my trust one of them took a week and the other is still earning my trust but almost there, she does go out without me but not when I am not home. She is younger but they both are still considered puppies. Recently we got a flock and we began training them to see if they could be trusted so far they have both been great. I am still not comfortable leaving them out alone with them and we have been training with the chickens and ducks for 2 months now with very few incidents and all from the younger one. Before I got mine I did read that they are not really an eaisily trainable breed. They have to be trained on instincts, with that said, mine do have some manners and sit before their walk around our entire property each day to get their leashes on. Montana is 7 months and Bailey is 11 months. Montana has calmed down quite a bit since we got her. Bailey has always been very calm and his instincts have been very good. Some LGD's are just born with better instincts some farms pick out which are best for LGD's and which don't make the cut and they try to place them as pets. Also most of the time the longer they train with their parents the better they are at their job. He can learn his job from you, but it takes a lot of work. I have heard of LGD's killing animals and turning out to be great LGD's.
Montana with the goats and chickens.
Bailey watching over the goats and chickens
Montana with the goats and chickens.
Bailey watching over the goats and chickens