I hadn't checked this nest for a few days, and when I went to the site today, it seemed that incubation was under way. After a while, the bird on the nest moved and I could see two eggs.
Later, as the light was fading fast, I had a clear view of three eggs, one of which looks newer than the others.
The new camera has now been installed, and Ossie has visited the nest. Pic from the site: did not see anyone at the nest yesterday, and the whole site was down early this morning.