Tuesday morning one of my hens was laying in the middle of the floor in the coop. I picked her up with no fight, normally she would try to walk away. She seemed depressed but other than that she was looking fine. I sat her back down in the corner. Later that day she had only moved about 2 inches so I brought her into the house. She had a full, hard crop and no intrest in food or water. Before bed she had a little diarrhea that smelled foul and she was breathing deep and slow. the next morning she was dead and her crop was soft and empty feeling. All the other chickens are healthy and acting normal, I thought it might be a crop impaction but now two days later I wake up and another one of my hens is dead. She was sprawled out in the middle of the coop floor. It looked like she died dust bathing. Yesterday she was completely normal like all the others today. I feel lost like I dont know what to do or look for. Can anyone give me any advice before I start a necropsy.