I see what you mean. Callia, my other hen, was literally screaming when I was burying Bianca. And Eris couldn't stop watching the process.
After that, her health quickly declined. I took her to a hawk vet (ironically?) because he was the only one available to see her.
He told me that stress from Bianca's death could've affected her immune system. Lethargy evolved into diarrhea and breathing difficulties. Hawk vet says it's probably coriza. He gave her a shot of antibiotics, and today, she has an appointment with the chicken doctor.
I'm under so much stress myself, guys. There's something worse than having a sick hen - it's having it when you're trying to grieve your favorite one's death.