My girls were laying 13-16 eggs a day. Now they are laying less than 10. Some of them have stopped completely or becoming broody. I really don’t want any chicks from mixed heritage breeds so I keep collecting the few eggs. I also have fake eggs which I am substituting with the real I es for the sake of the broodies. Is it the heat? They are not moulting. There are no changes in their diets. Thank you ahead of time for your advice.