This morning we found 2 chicks dead in our brooder. I know stuff happens. These chicks were purchased from the same feed store as the other 6 but on a different day (Sunday) One came to us with pasty butt, which hadn't cleared up yet, the other got it yesterday. Both were fine as far as we could tell yesterday, active and eating, drinking, pooping. We have one more chick in the brooder right now who's vent is pasty and is alive but not looking well. I'm pretty sure she's dying is there ANYTHING I can do?