I have a pullet who is about 18-20 weeks old. She is one of a group who is really not all that friendly.....however she has gotten downright nasty the last few days. If I reach for her, she will bite me and even hang on and growl if I keep harassing her. I held her for a while and then put her down and she immediately came back at me. I bumped her with my foot and she went back and then came right back and aggressively pecked at my foot! She is as bad as a cranky rooster. My other non friendly girls just squawk, screech and freak out when I grab them.....they don't get aggressive! Is this something I can get out of her? Or that she might outgrow? She is this tiny little thing and the rooster has only recently started courting the girls.....is it possible she is just going through a "phase"?