One of my Golden Comets starting acting odd yesterday- the best way I know to describe it is depressed. She's still eating and drinking, and moving around on her own, but she's noticeably less lively than the rest. She was following the other girls around more today, but yesterday she mostly stood off by herself. I noticed today that she was randomly straining, as if she was about to lay and her vent was bulging, almost inside out. (That may be normal, I never really watch them lay). It looked like a prolapse, but it was going back inside and returning to normal. I gave her a warm bath in Epsom salts, blow dried her feathers (which she LOVED), and crushed half of a Tums up in applesauce. After that I noticed she had watery, yellow poop with a dark spot in it. Not sure what I should do from here. Should I isolate her so I can know whether she is laying or not? Any advice is appreciated! Thank you.