This is Daisy in Box2. It is early in the morning.
Mid morning she does a nesting wriggle.
This is Chris, waiting for Chloe to arrive.
In she comes ...
... and immediately Chris goes.
Off he goes.
Half an hour later, we have a shot of Chris feeding Chloe.
Chloe with something that looks like dry grass or hay.
She doesn't seem to know what to do with it.
Another swap-over in Box1.
At the end of the day, Box2 is empty - as usual.
But Chloe is still roosting overnight in Box1.