I have a 1 year old Brahma that I noticed slept on eggs one night. When i touched her she puffed up and hissed at me. Well the next morning she was sitting on the roost. Then the next day and night she was on the eggs again. This morning she was on them but has now been off for awhile. She is just walking around with the other chickens. She does make weird noises when I go near her though. Is she broody? Can I let her hatch eggs?