I got some pullets and the person i got them from said they should start to lay in 4 months but they are not laying. I have noticed that the comb is just starting to come out. Do the chickens have to have there comb before they start to lay. The person told me to give them start and grow till they lay there first egg. I got the pullets the end of Feb/16. can anyone give me some info on this. please.