The fourth egg was spotted about 7 am on Tuesday morning and was probably laid about 3 am.
Incubation will start (or continue) in earnest now and will last for about 30-33 days. Last year the first egg hatched on 4th May (and on 9th May in 2007) so we can expect it to be about five days earlier this year....around the end of April maybe.
As the female gets older so she lays a bit earlier each year. A clutch of four is the norm, fives being exceptional.....and four chicks on that platform is quite enough thank you!
The female does the lion's share of the incubation, the male spending most of his time off the eggs and hunting to provide the food for the female, who doesn't hunt during incubation or when the chicks are small, relying entirely on the male.
Please scroll down to read about Jennie from Hong Kong........and a big thanks to Jennie from me for being such a good sport and coping with the massed media in a such a calm way! AND for giving the project such a generous donation....you're a star!
We may not get some of the national publicity of other peregrine sites, but we more than make up for it locally and regionally...and no site has such splendid donors and commentators! Thanks to one and all.
Nick B (DWT)
Ps By the way - and despite some poo and a spider, our web cam views are second to none (thanks to Nick Moyes' wizardry).....and anyway, who said there were other urban peregrine nests in the UK? It is just a rumour.....don't believe a word of it or be tempted to look elsewhere! Stick with us....we're sure you will.