I have had two chickens die within the last 3 months of quick onset of water belly that was cloudy. They got weak, wouldn’t eat or drink. No respiratory issues. I raised them from chicks and they were both about 2 1/2 yrs old. I had their fecal tested to make sure they didn’t have anything infectious which they didn’t. Their food is good, water fresh and living conditions are top notch. I don’t know what I can do to prevent this from happening to my remaining 3 chickens. Anyone have any experience like this?