My baby chick is close to 3 weeks old. I noticed today that her right side on her chest area was swollen. I picked her up and felt it. It's not hard. I can almost feel the feed she eats in there. Is this just her crop being full or could this be and impacted crop? I am fairly new to the chicken world. I have been a little overly paranoid. Is this something I should just watch, or something that needs attention. Any help would be appreciated. Also, she is still eating and drinking and just as active as all over the chicks. She's also still having regular poops. 

