2 weeks ago my black austrolorp hatched out 4 chicks and was absolutely great with them. Now as of today another hen has chicks hatching. I don't know what it is about another hen hatching chicks but the austrolorp is attached to her and will not stop attempting to get at her while also completely egnoring her poor babies who are constantly screaming. The one time she did make it in the broody area she viciously attacked the other hen. Any thoughts on what might be going on?