I didn't want to hijack another person's thread. I bought 1 month old poults at a swap last weekend. They appeared healthy and I tossed them in with some juvenile chicks around the same age. I noticed the other chicks were kind of bossing around some of the poults.. keeping them from the food but, thought they had worked it out. Today, I noticed the yellow poo. I see the tails of some of the poults look like they are tinged yellow on the tips as well. They were eager to eat and drink when I fed this morning but, the poo is concerning. I picked them up and they felt a bit light and I noticed peck marks on the tops of the beaks... SO... it could be blackhead from the previous farm as they are now indoors with a concrete floor with other birds that were not outside and it's been really dry here. OR, they could be in starvation mode. I separated them tonight and will offer more feed to them. I am ordering the flagyl (I'd like to have it on hand regardless) and was thinking of starting them on the goat wormer until that gets here in 3-4 business days. what do you guys think? ..anything else I should do?