I have 9 pullets born April 21, 2010. One RIR for two days has been "loosing her balance" squatting while scratching. She tends to drop a wing to steady herself. She is still eating and getting around and noticeably hanging out in the coop for the first time ever today. She is 19 weeks old. Is she getting ready to lay her first egg or has she caught sickness bug? Any help would be appreciated . I have had very good success with these healthy and spoiled ladies. I am new to this chicken thing so I am really not sure.