I have 18 chickens, this little girl is a new hampshire red. She is 16 1/2 weeks old. Sometimes she will walk backwards into us. Then continue to walk forward with the rest of the flock. She looks healthy. She eats well. The only thing I see is her walking like that. Its not all the time. None of the others is doing this. Not sure if she is sick or needing attention or what? She is a happy chicken and looks good. It is confusing. Is she sick or mentally ill?