I have 8 21 week old hens, and one 21w/o roo. One of my EE was shaking her head and letting out a high and low "EEP!" like the squeak that goes along with a sneeze, but I don't think she was sneezing. She did it (roughly) every 5-7 seconds about 7 times, and after each one she held her mouth open for a moment. Then she appeared to stop, but I had to come inside so I didn't have a chance to see if she was really done. She wasn't doing anything else odd, she was eating and scratching along with everyone else. Is she okay?