A while ago my hen started to lay in the nesting box and she'd screech whenever another hen tried to get in. When I opened the box she puffed up and screeched. Two of my other hens were waiting to lay but she would peck them if they came close. Later that day she just left the nest and payed no attention to it. She"s kept going in there in the morning and then decides to leave later. Is she just aggresive while she's laying or is she being broody for only half a day?