The pair's first egg was laid on 6th February and by 11th February there were three eggs in the nest. The female is now incubating the eggs — a task that will last about 28 days.
They're not the only birds to be nesting so early in the year. A Collared Dove in Thetford was on eggs before January was out! Full story here: http://btoringing.blogspot.co.uk/2013/01/how-do-you-like-your-eggs-frozen.html