I have a behavior problem with Paris. The last time when a friend comes at my home he became aggressive to me ,bites me and wants to go on friend arm or shoulder. The same do when I take him at my friends house. Only with my parents and my sister is ok at their house and if he see another man he became aggressive to me again. When the friend leave the house or when I take him from friends houses and return home he became the good quite, playful and lovely bird who wants to give kisses and hugs to me.He started do this in Augost and supposed he is in mate time. All the other time he is a very good bird. I can not understand why he reacts like this way with my friends.