Before the male entered (not shown here) the hen was clearly calling while sat in the nest cup. We think the basic structure is now complete and wonder whether this happens with other pairs. Something to watch out for in future years.
This is the only time this has happened inside this box this year so far. There will have been quite a bit of this going on outside the box as the pair continue to bond and the male supplements the female’s diet. She will be producing an egg weighing about 1g every day. Her own body weight is about 10g and she may lay up to 14 eggs.