I'm so sorry. *hugs* I've made a mistake before that cost one of my ducks his life (NM summer and water bucket had gotten tipped over in their coop, since it was such a big bucket I didn't think they could do that and water never was consumed that fast so I didn't check it that day). It's an awful feeling I know. You've just gotta learn from it and carry on. *hugs* I wish there was something I could do or say to make you feel better.