My 3 brown leghorns haven't laid an egg in about 3 weeks! They are about 8 mths old and were laying great! I also have 1 RIR and 4 PBR and they are still laying well. They don't look sick...maybe a light molt??? The weather turned a little cooler but we do live in south Louisiana so it's not exactly cold! Is this normal? Again..a light (unnoticable) molt???