Last year I started keeping a layer flock with pullets only. They began laying at 5 months. This year I added to the flock. Unfortunately I received several incorrectly sexed chicks, so 50% of my pullets turned out to be cockrels. I took all but 1 cockrel out of the popluation and into the stew pot last week. It's been 6 months since the chicks hatched and so far only 1 or the 10 are laying. Would having cockrels in the population effect when the pullets will start to lay? I'd love to hear your expereiences.