From what I have learnt owning chickens for about 6 months, when a hen has her beak open it means she is scared. The leader of her flock, Henrietta has been marching around the place with her beak open and wings slightly out, 60% of the day she does this for a few weeks now. Is this because of the recent goanna attacks on my ducklings maybe? She didn't whiteness it, but I can tell you chickens aren't stupid animals. I'm a little worried about her mental health and if she will be ok?