Over the past week I have had 3 hens die. I did a necropsy on all 3 and there were no common findings... Bird one…large blood clot in abdomen and VERY Fatty, large breasts, no signs if worms. Bird two….found alive in nesting box and looking like she wanted to lay an egg….poop all down her butt. Passed by the next morning. Necropsy didn't find anything unusual. Bird three… Found laying in yard, no injuries, she had just layer down. NO BREAST could be felt, crop full, she smelled like poo yet none on her. Ate and drank without problems, dead by morning. Necropsy intestines were SUPER bloated and filled with food, it looked the same as what was in her crop and her gizzard. No digestion looked to have taken place. No signs of worms, gizzard full and crop had food in it. Only change that has been made in teh past 2 weeks is that they have been getting whole oats and whole barley. Could this be the problem????? Im totally stumped!!! Help me PLEASE!!! Cant stand to lose anymore birds.