Timothy Norton wrote:It is tough to give you an exact, each dog is different and each style of training is different.
I have exclusively rescued adult dogs except my most recent dog who I got from a pup. One of the adult dogs I have had was a beagle who allegedly came from a puppy mill and had a LOT of anxiety. He was a people please but his biggest motivation was food. Specifically cheese.
Does he have basic obedience down? Sit/Stop/Stay and the like? I would recommend working on the basics. This is not for the tricks themselves but to establish your working relationship between the dog and you. Trust, for a dog, trickles out positive effects throughout their life. Find what motivates him, use it to your advantage. Some dogs just want a special toy, or affection, or food like most of mine! Once you get this down, it is distraction time. Start throwing curveballs to try and get him to lose focus on you. This will help them build self restraint with the goal of ignoring LIVE animals.
It is all easier said than done. Where about would you say the dogs training is at currently?
This thread might also have some information that could be beneficial to you. - https://permies.com/t/210371/cure-chicken-killing-dog
Timothy Norton wrote:My dog is not a chicken killer in the sense that she grabs the chickens, but she has a tendency to want to chase such as your dog.
I constructed an enclosed coop and run for my chickens in order to prevent any intermingling. The bottom portion of the run is covered in 1/4 hardware cloth held with staples, nails, and galvanized strapping. It has been the best investment because I have had other local dogs that got loose come and inspect the chickens while they have been out in their run. Not one loss so far.
I'd recommend only allowing the dog out when it can be under control by someone right now while you work on obedience.