I was wondering if anyone with more experience could help assist me in figuring out what is going wrong! Flock: 5 Buff Orphingtons, laying now, 24 Weeks. Solid Production so far, no issues. 3 Columbian Wyandotes 3 Black Austrolorps Both types 3-4 Months old First we lost a wyandote, found her dead in the coop in the morning. Thought possibly scared to death by a predator. No apparent signs of injury or illness. Added ACV to water in case it was sour crop. Then in the past 2-3 days we've found 2 Orphingtons, another Wyandotte, and an Austrolorpe being the following: -Standing still in a single place. Not moving with the flock as usual. -Puffy. Fluffed out. -Signs of diarhea (NO BLOOD), poopy butts, watery poops. We've tried to keep them as clean as possible. Vents are not closed up though, only on feathers. - Hunched down, butts facing up in the air, feathers spread. We reacted by thinking cocci, went to Tractor Supply (closest store with medications) but they were out of Corid. Had to go to local farmers market who only had Salumate(spelling might be wrong, it's 1:35a I've been up all day, sorry). Cleased drinking dish, filled with medication. We've tried to quarantine chickens as we found them, til we realized it was most of the flock. Of the 4 sick chickens, one of the orphingtons and the austrolorpe, seemed to respond very well to the medication and are mobile and active again. Well tonight the orphington wasn't doing well. Children and wife bathed it in warm water, checked for egg bound, brought no issues. Did find a whole grape tomato though (wierd). Vent was extremely pooy (if that's even a word), and extremely foul smelling. Her breathing was labored. Was very lathargic. After we put it away in our living room for the night, it siezed loudly and passed immediately much to the dismay of my entire family watching. Finally got the kids to bed, went and checked in the coop to find the wyandotte on the ground, acting the same, and I fear she won't make it through the night with how quickly the other two were lost. Does anyone have any ideas I'm not thinking of? Is cocci decimating my flock? Should I cleanse the entire coop? Could they have botulism from a bad bag of food? (Using a mix of layer and flock feed) Could scratch (which is given in morning as a wake up snack) be doing this? The entire summer they were all so happy! This is decimating my kids!