An owl was making hits on my ducks at night so I locked the survivors up in a chainlink kennel and the owl managed to attack one through the chainlink and blind it completely. I was going to kill it but it started acting like it felt better. Unfortunately its lost a lot of weight so I'm afraid I'll have to end its suffering. I hate having to do this, I haven't killed any of my ducks yet, but am planning on raising some for meat. I guess this will be practice for the future.