So I have 5 banties. All different breeds that are 20 weeks old. One of them - started doing this thing where her neck goes all twisted for couple of seconds and she starts backing up. And then after 2-3 seconds she stops and normal again. Her poop is normal/they are fed organic layer feed. They have chicken coop with access to outside closed run. Never had any issues, and all others are doing fine. Anyone that is experienced, does anything comes to mind right away on what this could be? or should I just wait it out and see?