I have a 4 mnth polish rooster. A few weeks ago he started trying to peck us (which I stopped by putting my foot under him and sending him airborne or picking him up and carrying him around for several minutes). He has not tried pecking again but he has made this growling noise at my husband a few times when my husband gets close to him. Sometimes the rooster even lays down and growls at him. What does it mean? I am the person that takes care of the chickens and he has never made this noise to me.