Everyone's advice is very good.
I think it is always easier to start a puppy with chickens than an adult dog, unless the adult dog is very well trained.
I also think that a game hen with chicks is a great training device!! I just let the pups walk past her chicks, and the hen takes care of the training. LOL
Seriously, though, it does take some time and lots of patience. My GD has a mutt (Blue Heeler X Border Collie) that is raising her 3rd litter of pups in the same pen as the chickens. I kept 2 of the pups from this last litter and they are still in with the chickens. These are my laying hens, and I incubate the eggs, so they won't be left alone with baby chicks. They have had the game hen lesson, though, and they stay far away from her when I let them out to play in the grass. When they get big enough, I will move each pup to her own chicken pen. They are also getting a lesson from our sheep who have new lambs. The pups are doing great and they will be 8 weeks old on Sunday March 16.
Jean