Good morning everyone Yesterday, we had one of our hens who suddenly changed and stopped eating to rest. We attempted for a few days to try and improve her but she wasn't getting any better. Some of her symptoms were : Lethargic behavior Wanting to be alone Standing in one spot quietly Sitting sideways but alert when I checked on her A rather very red area below her vent that had no feathers but felt like a sack Slow or no walking Before all this... A couple weeks ago, I went outside to find my side door to my garage open. This hen always went indoors if a door was open. Well, she was in there when the rest of her flock were outside. I shooed her out. This past weekend I noticed her in her egg box for a long time. I assumed maybe egg bound. Have her several soaks, oiled her vent to non avail. She stopped eating, and became lethargic before I tried anything (how I knew she wasn't herself) . I locked her in her own coop in the run with others outside the coop. She would drink but not eat. Her poop was a bright yellow green diarrhea whenever she did poop. Yesterday she was less alert and miserable so we had her put down quickly. I did not find anything in there yet that is liquid that may have poisoned her but still looking. Also a spider or something in there caused it? It was only her thats why I remembered. My question is should I continue to quarantine the flock she was in just in case whatever it was may have been contagious? Again, no idea what it was that caused her distress. They seem themselves and happy. #2 I have new chicks that are inside the house at night, but go out during the day in an enclosed area in the yard that flock would roam in before. Is that a bad thing? The old flock is in a fenced in area in the same yard away from the new babies. Wasn't planning on introducing for a few more weeks anyway because they are still little. We live in forest but have mainly dirt in the yard so will that hurt the new ones if the others were in it before and happen to be ill? Thanks!