For the past couple days one of the Golden Comet hens would occasionally twitch her head and hold her head back and shake. I noticed it the other day and maybe thought she got a strand of grass in her nose or something. But she doesn't. Last night before they went to bed I felt her crop and it was pretty much full, so I massaged it and angled her and liquid came out, but she had just drank and ate so I don't know if it was sour crop liquid. It smelled sweet like sugar and cinnamon weirdly, but I did just give her corn so maybe the carbohydrates were breaking down into sweet smelling sugars. I don't know anyone got ideas?