According to my internet search, there is a lake in Puzhehei, Yunnan, with hundreds of black swans and other swans roaming freely. It is only 800km from HK. Like Japan and the U.K., these swans were initially domesticated by human. But as time goes by, they breed and give rise to generations that can fly. Even the black swans in Fairview Park once gave birth to a baby swan long time ago. I suspect that this one is one of those offsprings carried down by the strong monsoon last week.
[ Last edited by Jackvader at 28/02/2017 17:05 ]