My black copper maran hen (born last March) started laying in December and has consistently been laying every other day since. She hasn't laid in almost a week now and otherwise seems to be behaving normal. All my other hens have been laying consistently (even the ones who started laying at 20 weeks.) Should I be concerned? Schedule a vet visit? Or is this normal? This is my first year with chickens and I'm not sure what to expect. She's my favorite hen.