I know mine started trying to mate with the girls a couple weeks before they started laying. So I would guess she is going to start laying soon. But I only have my one group to go off of.My roos are 5 months...my girls are too but they haven't begun layin yet.
One girl is letting the roo mate...and based on how my past pullets have done she does act like she is going to be layin soon.
She wouldn't let him if she wasn't right?