I noticed that one of my six 3-wk-old chicks is always always eating. She seems to always be eating unless she is sleeping. I have felt the crops on the rest of my chicks bulging out, but on this chick, I never feel hers getting full. Shes also a little bit smaller than all of the rest of the chicks. Could she have been born without a crop, or a significantly smaller one, so she can't store food like the others? Has anyone ever heard of this, and is it even possible? Thanks in advance.