While they weren't looking, I put some fresh gravel on the nesting tray, since they had managed to lose most of it down the crack between the planks.This is a larger grade than before, so hopefully it will last longer.
Bella and Christopher Robin seemed happy enough with the extra gravel.
Bella soon made a new scrape in the middle.
Sometimes by shoveling the stones with her feet...
...and also by picking the odd stone up in her beak.