The male is in the box and has enticed the female to follow him in.
The pair in Box1 appear to be bonding nicely.
Immediately she enters, he startes to leave. It all happens so quickly I cannot get a better picture than this one.
By the time she has landed, he is off!
The female celebrates with a nesting wriggle.
And another.
She is really going some. Surely she will start nest building soon.
Stuff
Nearly three hours later they do it again.
This time the female doesn't come to the floor of the box but swivels on the entrance hole and looks outside.
Shortly after the male escapes and the female celebrates with a nesting wriggle.