Hi I have four hens they are A delaware,golden laced,silver laced,columbian laced wyandotte they are all 11 months old.I got them at the same time.My buddy just gave me a Australorp hen Im not sure how old see is but see is about the same size of my birds.I let them free range all day and at night they roost together,I have her for two days but as soon as she comes out of the coop they chase her all over,till she goes back in the coop.Is this normal?will they accept her?or should I do some thing else.thank carl