I have a 12 month old springer, I've been doing as much training with him up to the point where I thought we were doing well, he was stopping on the whistle and recall was going well. However, I've recently moved house and bought myself some pet chickens which are in their pen for a certain amount of time then I let them roam free for the rest of the day. My springer has always been interested in them but I've never let him go near them off his lead. I was recently out for a walk with him, was a good 10 minutes from home and he decided to bolt off, despite me calling him and using the recall w