One of two mute swans chased away by the third one appearing suddenly

mute swan swan white plumage wildlife waterbird waterfowl birdlife forage beak ornithology bird birdwatching cygnus olor orange bill bird watching frosty cygnus poland crop nature graze large conflict environment land field rub winter frozen cold frosted countryside big interaction white behaviour natural chase morning europe sunny afternoon wild behavior clean bill real time nobody static shot