After kicking her off around noon, DC did it again!
B started alarm-calling around 3:07, but evidently it should be annoyed-calling.
He flew in to the top of the nest box, and she didn't budge. So, with her still yelling at him, he bowed from the front perch. That didn't work. So, with his cheery, cheeky chirps, he came into the nest box, and gently kicked her out.
She proceeded to the front perch, still yelling at him, while he settled down on the eggs, and then she flew away still grumbling.
(movie)
It's amazing how pleased with himself he can look! He's got this down!