Mum’s spent this morning sleepily relaxing in the roost. She’s shifted the eggs into the center of the box, which moves them a little further away from the edge camera view but centered for our nest camera. Unfortunately when she took off for a break, and before dad returned to take over, the view only shows 2 eggs!
Two possibilities – somehow one has been pushed over to the edge of the floor, in the small blind spot in our cameras, or, more likely (as dad wasn’t interested or concerned about anything apart from the remaining two eggs) one may have been kicked out if there was an urgent departure between last night and this morning. More research required.