Hello! I have two hens that are approx. 1 year old. They are normally very friendly, roam around the yard, perch on their perching rail and have no issues with our pets. Over the last two weeks, they have not been laying as many eggs but both have now been hiding in their nest box. When I try to take them out, they try to peck me and fluff their feathers. When I put them in the backyard to roam, they beginning making loud noises, try to attack the dogs, and peck at their own feathers while still fluffing (repeatedly). I have also noticed a decrease in their fluid and food intakes. Can anyone advise on what could be the reason behind this?