I might be paranoid because I lost quite a lot of chickens this year, but better safe than sorry. I have this one 5 months old chicken that sleeps most of the time. She eats and drinks normally. I cought her many times now falling asleep while standing up. Really, she seems narcoleptic. Sometimes she keeps her eyes half opened and she almost seems to have a hard time keeping them opened. When she's eating she also holds them half opened, sometimes even closed. If stimulated she will run. What's going on?