I live in West Palm Beach, Florida, and have been watching a couple of Mute Swans that live seemingly on their own in a big freshwater lake near our downtown. Could they have migrated from somewhere or are they probably escaped domestics? Last year we noticed a single one on this lake, it was there almost every week we drove by on our way to the library. Then it was gone for several months. A few months ago we noticed there were now two of them -- no way to tell if one was the swan from last year. They're so beautiful, the boys & I always keep a sharp eye for them as we drive by. Sometimes "Swanny & Mrs Swanny" are near the shore, other times 'way out in the middle of the lake. Today we noticed they were on the lakeshore, so we stopped nearby and walked down by the water to get a closer look. They went into the water as we approached, so they're not accustomed to having people feed them, which is a good thing I think. Where do you think they came from?