I have a flock of 5 hens that are 20 weeks old. My Dominique has been the sweetest until about 1 week ago. She wants you to hold her but as soon as you put her down she turns around and bites the heck out of my finger. I tap her beak and in a firm voice I tell her "no". Any advice from you guys on how to break her. The pot is not an option, she is also a pet!