I have noticed my bantam is sort of twitching. I thought she was about to gag. It's as if she lifts her shoulders forward then back. Never really opens her mouth. Seen this the last 2 days. She is up and about and even is outside in cold weather. She seems to eat with others, and moves around. She seems to have her feathers puffed up... but it's been rather cold out. She doesn't lay an egg every day yet due to weather, but she was laying for me. Not last 2-3 days though. Don't notice anything in her breathing.