There were two swans one male and one female that we're getting very aggressive today, they were biting at each others wings, aggressively pecking at necks and pulling on each other's feather so much that some were pulled off. One of them got their head put underwater whilst the other was on top of it and one got their neck stuck under its own wing at the end of the fight. Is this a swan fight or swans mating? Some people watching insisted that it was them mating but it looked way to aggressive in my opinion!