I just bought a few "Ameracauna" chicks, supposed to be 3 weeks old (also supposed to be Ameracauna but they don't quite look pure to me, cheeks are not as chubby as many others I have seen). Anywho, the feed store was closing so we were in hurry to catch them and pay and leave.... Upon getting home I noticed that some of them have scaly bare spots on their backs near the tail. They were in with some same-aged Guinea fowl, and were fairly crowded for the age chicks they were. Is this just feather picking, or something more sinister? The chicks are normal size for their age, good feather development, active and healthy seeming. Included some normal front/top views for informational purposes (the bare spots are between the wings). I did looks carefully at their skin and could not find any sign of lice or mites. I am pretty darn new to chickens, but I read as much as I can get my hands on. Thank you in advance.