Hi all! I'm a newbie owner of a month. I have two bantam hens- both less than 5 months. I think they have been molting because it is the middle of Summer in Australia, and I haven't seen any evidence of lice/mites. The black one was bare on her tummy but it has regrown (below). They are eating, drinking, and leaving droppings as per usual. My eldest hen of the two also stopped laying eggs but today we found half a shell. I have checked her vent but can't see the remainder in there or in our garden. Any you have an explanations/advice? Should I be worried? Thank you!