3 month old bantam cuckoo Marans. Not one single other chicken is acting off, just this one. My son found him yesterday with his head drooped all the way down. He's very very weak, has liquidy clear/yellowish diarrhea with small bits of brown and green mucous. Yesterday, he had some solids mixed in, so I think he had probably been eating ok up until them. He is not paralyzed at all anywhere, he's just so weak he can't hold his head up. Eyes look normal. No wheezing, no fever. I've been giving him water with a dropper, and this morning, I gave him some water with honey in it thinking maybe the energy would help him more than plain water. He barely had the strength to swallow it. I am pretty sure he's dying, but I am really worried about the rest of my flock. Any ideas what it could be? I just put Wazine in their water today thinking it might be worms. It's probably been about a year since I wormed them, but we just moved to this place 3 mos ago, so I didn't think worms would build up so fast. I had so many people tell me they don't bother worming, I thought I'd wait and see if and when they got symptoms before worming again. Thinking that may have been a mistake! I did notice a lot of runnier brown poos under the roosts in the morning, not sure if that is related. So maybe others have had milder diarrhea, but it just looked like a variation of normal, to be honest. He is the only bantam cockerel in the group of 10 adult hens, 1 adult bantam rooster, and about 30 3-4 month old chicks, mostly girls, but plenty of lf boys. My 12 year old son thought maybe the others hadn't been letting him eat or drink since he is the smallest cockerel, but I honestly can't see that being a problem. I have several waterers around, though they seem to prefer to find puddles! And 2 big feeders that always have feed. It is possible he got into a fight and lost. Or also, we just got goats a few days ago, and one keeps climbing the fence to get into the chicken yard and eat their feed 9i'm adding a line of electric to stop that, as soon as it stops raining.) I don't see how he could have gotten hurt by the goat without being able to easily get away, but it is entirely possible, especially if he got trampled when I chased the goats out of the coop.