My best advice is to simply manage, and just keep the dog away from chickens. That being said, I did do some training with my dog, teaching him that ignoring my ducks was more rewarding for him than staring at them or chasing them. I used a clicker, and just clicked the clicker and fed him a high-value treat each time he turned his head away from the ducks. I started out with him only being able to hear and smell my duck(I only had one when we began training). I gradually began allowing more access(such as only keeping my body between them, and then making it so that there wasn't anything between them). I just worked slowly, and at my dog's pace. I'm not on my computer, so I can't show you the videos, but I'm pretty sure I did upload the video in another thread, as well as a photo of one of my ducks going in to nibble on my dog's tail, with him lying down calmly. My dog is getting up in the years, and has a couple issues that make him less active. In his prime, he used to drag me across the road in order to get cats. Even just the other day, he caught a mouse, so he is still a capable hunter. I couldn't even tell you the amount of birds he's caught, lol. But, my dog also prefers to be inside, and only goes outside to do his business, eat(he's fed raw meat, so we feed him outside), and if someone else goes outside. EDIT: I remembered that BYC saves images! Here's a video as well.