I have never had chickens before -- our chicks are 5 and 6 weeks old, and eating starter feed. Frankly, their looks change every day. Today it looks like all 4 of them are a little lumpy in the chest, on their right side. Is this normal? I looked at an anatomy chart and it looks like maybe where the crop is. It's not crazy big, but enough that I noticed. We have recently started giving them treats like bread and grapes and they LOVE it, but should I be doing something else? Or am I giving them too much?