hello... i work at a small chicken processing plant that processes different people's chickens raised in our valley. occasionally we come across a batch of meat birds that doesn't look great. often the person reports a few of them have started dying a few days before they were brought in. some of the birds are literally FILLED with a yellow watery fluid that comes spurting out like a geyser when the carcass is cut below the breast bone for gutting. when this happens, i am always shocked by the amount of fluid that comes out, it seems like a lot for such a small space. some of them just have this fluid around their heart, held in the sac that covers the heart, and sometimes the heart is like a raisin sitting in this yellow fluid too long. i raise my own birds and have never come across this in my own flock. i don't raise cornish cross though, and i don't think i have ever seen this yellow fluid in a bird that was not cornish cross. anyone else ever seen this? what causes it? all we know is that these birds with the yellow fluid were on their way to dying because of this fluid. for a while i thought it was cornish cross that got too big, but we did a batch the other day that was not too big (maybe older though, i don't know) and a lot of them had this yellow fluid. I also wonder if it is related to feed. thanks for the help, we're all interested in knowing what is causing this, and your thoughts will give me something to talk about next time i head up to gut chickens. thanks!