Security guards from Harbin Normal University rescued two black swans after they got trapped on a frozen lake in northern China.<br /><br />The video, filmed in the city of Harbin in Heilongjiang Province on November 6, shows two black swans stuck on a frozen lake and two men on a boat attempting to rescue them.<br /><br />A trapped black swan can be seen managing to escape by flapping her wings repeatedly.<br /><br />After around an hour, the two security guards finally broke the ice and rescued the swans from the ice.
