I have pullets from ages 16-25 weeks. Should I expect each of these girls to lay before December? I'm trying to figure out if some should be culled for being non-producers, or if I really need to wait until Spring since this is downtime for laying. I'm struggling with the logistics of feeding non-producers throughout the winter only to be culled in spring vs keeping the non-producers b/c they add body heat to the coop. hmm. any thoughts? oh, and some of the 25 week olds are laying.