I have two 7 1/2 week old EEs, I spotted one of them (unsure still if boy or girl....thought girl, but now just seems to stand more like a roo), anyway found him picking at egg shells the other day. And not just like checking them out, like really eating. Is this normal, okay, should I think it is a girl but older than I thought, but even then it would only be like one week older. I'm so confused.