Don't disturb me, I'm Busy!

We have been watching this lovely little wren for a couple of days as it goes about the business of nest building.
It kept flying down to the ground to find beakfuls of moss and occasionally leaves. It then flew up to the nest site in a hole in a nearby tree.
I tried to get more "classic" pictures of the bird on branches / twigs near the nest site but, goodness me, does it move quick!!
I had to settle for this shot as it was rooting around on the ground near me.