Cheeping sounds were reported as heard around midday, thought to be coming from the eggs. No sign on any chicks, but there is definite pitting of the shell, visible as a pale patch with the outer shell broken off in the picture below.
In case it’s not very clear, it’s on the darker egg to the right, on the top left-hand corner. By dusk this evening, the female was sitting tight, allowing occasional glimpses of the four eggs, with the pale patch visible and no larger.
Here in the picture above it’s on the egg to the front left, which she’s looking at and then turned over with her bill before settling back down to incubate.
Could be a cracking day tomorrow, and I promise that’s the last of the egg-related puns.