So in all my year of having turkeys guineas ducks and chickens I've never had a hen lay while she is has chicks they r 15 and 17 day old and she layed here second egg today I like to leave the hen with the chicks til there about 3 and a half 4 weeks but does this mean the hen thinks the chicks r old Enough to be on there own or should I separate them I do have a heat lamp that I can give them during the night if I need to but I'm just wondering what doe this mean or is it something some hens do