Hello, I am new to chickens and I have a Sienna who has coop mates that started laying the other day. I noticed this one is not as active and keeping separated from the others. Today, I went to the coop and she started stretching her neck as far as she could, ipeniop her mouth and "squawking". She does the action repeatedly ever minute or two. She doesn't seem to be having respiratory issues. I worried she is choking like something is stuck. Any idea what my issue may be?