It may be the middle of winter but today was a magnificent blue-sky day with real warmth in the sunshine and a high temperature hovering very close to double figures.

This gave me, and many other people I’m sure, the idea that Spring was in the air. And, when I walked across Cardiff Bay Barrage this morning, I noticed that the weather was making this pair of Mute swans feel rather frisky.

When I first spotted them, they were indulging in a lot of synchronised grooming, constantly ducking their heads under the water before cleaning and preening their feathers, rubbing their heads and necks together. Having watched this behaviour in many species of birds over the years, I was fairly sure this was going to lead to something more intimate, and I was right.

And, though mating amongst water fowl always looks like the female is going to drown under the weight of her mate and with her head forced under the water, these beautiful birds are always very tender with each other before and after the actual event. It may be a bit voyeuristic but their mating is a lovely thing to watch.