Hey,guys! We have 2 separate groups of chicken. That don't mix. 2-3 days ago my husband found one of the hens in one of the enclosures laying on the floor. She can't stand up. I checked her legs and they both are responsive and moving. It's just that she can't stand up. Today he found another hen in the same enclosure with the same problem. 2 days ago one of our roosters from the other enclosure had kinda the same problem,he would stand up make 2-3 steps and lay down,he died few hours after we found him doing that. The 2 girls are still alive. Does anyone know what might be going on? We want to protect the rest of the flock.