Dogs really can do some serious damage, but I forgive because they are just being dogs. My mother's past dogs would get loose and make short work of her flocks, and the neighbor's hunting dogs have dropped by and tried cleaning house...my chickens hate dogs. Dogs and chickens need to be as far away from each other as possible in most cases.Free feather, that's sad about your Sebright. I have been lucky so far. I have one neighbor that I'm concerned about. He has one dog that gets loose every now and then and our place is the first place he goes. I keep thinking I should probably have a club or something handy. I hate stories where people have their whole flock wiped out by a dog. Someone I know had 20 some chickens wiped out. I would be furious because people don't realize how much time and work we put into chickens not to mention lot's of them are pets. Sorry about your bird.