I found a chicken dead this morning. She had been sleeping separately from the flock for a few days. My coop is secure so no predators. I feed twice a day and keep plenty of fresh water as well. I plan to clean the coop and disinfect all surfaces and monitor the rest of the flock. The rooster had direct contact with her while she was lying on the coop floor. Concerned about illness and safety of the eggs. Any advice would be appreciated.