So complicated situation. I live in a shared house which contains me, my landlord, her kids, her kids' pets, and mine. My landlord absolutely loves my dog, whenever I'm not home she takes him downstairs to spend time with the other tennants dogs (she also takes them down I believe,) and basically from time to time he comes into contact with her daughter's free roaming budgies. Generally she and her kids think it's cute that he tries to get them, and while he's with them this behavior is encouraged. I'm trying to teach him to leave my own birds be (which I have done successfully with every cat and dog I have owned in my life,) but I'm unsure if the positive reinforcement will be a problem. I definietly can't confront her on this because of how kind she has been to me by even petting my dog, much less insisting on walking him and letting him play with the other dogs. Can a dog learn the difference between chasing a budgie and chasing larger, unsimilarly shaped birds? He definietly knows to leave the bird alone when I'm in the room, but I prefer to teach a overall passive-ness.