Anyone know, what this dance is called?

Down to Erskine to have eyes tested on way back asked SIL if we could have a look at the pond at the Inchinnan Industrial Estate

Did take other photos of the two swans but liked this one of one of them being blown about with the wind..........and then made a hasty retreat to the car as it was following me.

It has attacked my nephew's car and was pecking at the windows, so he does not stop now to feed them, it also stops traffic by wandering on to the middle of the road