16 hens an the roo, we bought chicks from 2 different people last spring, we had 35 chicks an last fall I culled roos to the 16 we have now, an yes I have 2 heat lamps going in the coop for winter but in spring I'll go to a 40 watt light, and leave the outside pen open for them, they stay in it ,in fall I have a "chute " that gives them access to the garden for feeding on the old garden scrapes, an tilling an fertilizeing for the next spring.