It's now day 7 of her egg laying. Each day, around 6 am, activity begins and as soon as an egg is laid she covers it with material in the nest. Then a short time later she returns with more material to further bury the eggs.
At first I wondered why she dug such a deep pit in the centre of the nest, almost down to the floor, but I guess it's to accommodate a number of eggs. I also wondered, as they lay an egg a day, why by the time the last one is laid are the earlier ones not stone cold. Having seen how she buries each one in turn I can see that the nest is keeping them warm to some degree. She's almost upside down packing material around her eggs!
Fascinating to watch.