a hen is ready to start laying? I have 4 hens (white leghorn, RIR, BO)born in the end of March 2010. And 3 BAs born April 10, 2010. So when can I expect them to start laying? Should they be getting Layena already?- I still have them on Flock Raiser. Does the nesting box have to be in a quiet, dark place?