Noticed just now: Egg no. 3 has arrived. Unless my memory is going, the interval between the laying of each egg in a clutch is supposed to increase over time, but I don’t think that has happened in this case. I’ll have to review frames from the nest box this weekend to try to narrow-down the time at which each egg appeared, but I think the delay between eggs no. 2 and 3 was either the same, or a bit less than, the delay between eggs no. 1 and 2. If so, Mme. Owl has pulled-off an interesting trick.
In any case, egg no. 3 has arrived, and that’s good news, no matter the timing.