Black Swans

In this lagoon area, we went canoeing a while back. There were no swans around. We recently decided to walk around it and there were about 60 or more swans. I'm not sure of the movements of swans as to where they all came from. I wonder how they would take a canoe going through their midst. Anyway, they seemed happy and after realising we were harmless, they seemed to ignore our presence.