Been dealing with something real nasty going on with my birds. I’ve lost about 5 birds already. Already treated with corrid, now giving them some vitamin supplements. Today, one of my favorites just dropped the dreaded bloody poop. I can’t figure it out. I JUST finished a corrid treatment, shouldn’t that have cured it? I’m just at a loss at what to do, I don’t want to lose any more birds. Any advice would be greatly appreciated