ChickenCanoe, I don't vaccinate or use medicated feed either. Exact same reasons. I wrestled with that for a very long time, and once I reached my peace with my decision I had to explain to a really soft-hearted DH why I would not vaccinate for something that can kill birds. He gets very attached to things he takes care of, which is one of the things I love about him, but as time goes on he understands more and more how I decide what I will and will not do. He contributes and does his own research, and it makes for some interesting discussions. He finds things I don't, which is actually very helpful.