Swans in love?

An early morning walk with Jimmy round the Derwenthorpe lakes and I was delighted to see a new arrival. Last year one pair of swans appeared and late in the year a third. Now we have two pairs and this pair (see extras) appear to be a male and female. The male has a deeper orange bill and was occasionally fluffing himself up while sticking closely to his pal. Unfortunately he had stopped this behaviour by the time I had got my camera out and they both proceeded to carefully preen. I have added a couple of extras.