We're now settling in to a routine of around 500 new visitors, plus another 500 returning visitors to our webcams every day. We welcome you all, and thank you for heeding the call to close your browsers after watching. It's done the trick, and drastically lightened the load on the Streamdays servers.
The Derby Cathedral peregrines have now settled into an incubation routine, too. It's clear that the female sits on the eggs for most of the night, getting relieved either an hour or two before dawn, or shortly afterwards. There are usually a couple of changeovers during the day before she resumes again for the night shift. Only once so far has the male spent most of the night on the eggs.
These changeovers nornally takes less than a minute, but once or twice the eggs have been left exposed for six or seven minutes.
Sometimes the sitting bird simply doesn't want to move. More than once the larger female has seemed to stand bemused by her failure to rouse her partner, or vice versa. But she's bigger, and when she waddles slowly in from the right side of the platform he invariably gets up and flies off. If you see a changeover online you're quite lucky. Had we managed to get our audio channel up and running in time this would have been a useful early-warning of a changeover, as the birds call to each other with a gentle chirrupping or ee-chupping sound when one of them arrives on the ledge.
Meanwhile, enjoy watching.