One of my hens(Goldie, Buff Orpington)has been acting a little different than her usual sweet self. First of all, she's been sitting on the nest box a little longer than normal after she's laid her egg. Goldie also puffed up and made what could have possibly been a growl, but it was so short and quiet I couldn't tell when I reached under her to see if there was any eggs. Second, Goldie has been making short, grunting noises when competing for food(such as bread, leftovers, etc.)and seems quite protective of what she has. Third, she's been more aggressive towards her fellow hens when most of the time she hardly pecks anyone at all. When she was dust bathing today she puffed right up and got after Jenny, a Silver-Laced Wyandotte hen. Any other reasons for her behavior other than being broody?