Migration? Kinda...

There is a pair of Mute Swans locally that have attempted to nest by a pond in the middle of a housing estate where I live but there is nowhere suitable for a nest, due to the pond having a fence all the way around it. Last year they went to another local but more remote pond and hatched 7 cygnets. As soon as they were able to waddle, the parents walked the babies back to the other pond where they knew they would get more attention and food given to them. This was maybe a mile or just over and involved crossing several roads. They all made it and now the parents have gone back to their breeding pond and left the 7 offspring on the urban pond.