You are probably seeing two males trying to establish territory. They will go around in circles until one gets the better advantage and then a fight will usually ensue. Sometimes, it looks as if there is an imaginary line drawn between two males and each dares the other one to cross the line. They will go about this "dare you" to cross the line game for hours until they get distracted or get into a fight and one wins the area. Hope this helps. The Regal Swan