Several days ago our puppy got the gate to the run open because I didn't check the latch. She slightly injured my bantam Cornish which in turn caused a prolapse. We tried treating it ourselves, failed, and took her to the vet, but it was too severe to have a good prognosis. So we put her down. Later that day, my Silkie started acting weird. She'd make a strange squawk and wander around sadly. She also didn't lay for two days and no amount of greens or blueberries could entice her to eat. She was still preening and dust bathing. Yesterday she started trying to set on the EE's egg so I thought maybe she was going broody. When I checked on her this afternoon, she was dead. My other chicken is acting totally normal. It seems really coincidental that she got sick. It's hard to check a Silkie vent but when I checked yesterday she didn't seem egg bound. Can a chicken get depressed, stop eating or drinking and die? It's been cooler than normal here so I don't think it was heat. Other than not eating and making the sad noises, she was moving around fine. What could have happened?!