I suppose it is easy, floating about on the water.
This is one of our breeding pair and I think that it is the male. The only real difference between the sexes is that males have brighter orange bills with a bigger black knob on top of it. They are easier to sex when you just have a pair of them like this.
It could easily be the other way around though, they both take it in turns to incubate the eggs which is a good thing because it takes five to six weeks before they are ready to hatch and that is a lot of sitting on a nest.
Then we could have as many as six or seven Ugly Ducklings or cygnets as they are sometimes called. and when they are little they can sometimes be seen riding around on their mothers back. I can see a few good photo opportunities coming out of this.
For now we are just going to have to be patient.