Swans' nest in the heart of Oxford

Hedgehogs are always going to be stars of the show on this blog, but I've decided that I'm going to include photos of other local wildlife once in a while.

This swan - one of a pair - has made its nest on the Thames right next to Folly Bridge, practically in the centre of Oxford. I often pass this way to and from the office and often stop to see how the swans are getting on - as do many other people - there was a small crowd of onlookers when I took this photo on Monday evening. A couple of weeks ago I got a glimpse of the eggs as the swan was rearranging itself on the nest. I hadn't realised swans' eggs were so big. I wonder when they are due to hatch?