The female has obviously laid her eggs, and she is now sitting tight. The male visits and takes up station on a branch. He seems to be guarding her. Maybe he thinks he has done his bit, and he's just at a loose end.
The nest is so well camoflaged that I had to wait for a bit of a breeze to lift the leaves, so that I could see her.
Incubation is 12/13 days, and the young stay in the nest for another 14 days, fed by both parents. So Dad's obviously just out with the lads until he's next on duty. John will have to keep me up to date on their progress after Sunday next.