The peregrines remained on the cathedral throughout the winter, holding onto their nest site and chasing away intruders regularly. They have spent recent weeks preparing to breed by carrying out ledge displays and making a nest scrape.
Last year’s first egg appeared in the early hours of the 25th March and the female has been remarkably true to this day by laying her first egg of 2017 late on 24th March, not long before midnight.
A watcher in Texas saw when the egg was fully uncovered for the first time and I wonder how many other people were watching in countries around the world.
It was daylight when the male got his first look at the egg but the female soon arrived to keep her eye on it.
We expect eggs to be laid every two and a half days, approximately, until there is a clutch of three or four. The female will start to incubate when the penultimate egg has been laid.