Most peregrines hatch their eggs synchronously within 48 hours, so I don’t like the chances of this egg. Thanks to those who showed concern.
Peregrine eggs often fail to hatch, more often than with other raptors. Can sometimes be related to humidity. They often leave the eggs exposed at dawn for this reason ie to let them be exposed to dew.
Unfortunately we had a major thunderstorm this afternoon, and I’ve lost the connection to the server, so am not completely up-to-date, but hopefully it will be reset tomorrow.