Home Insulation

This is not my chosen blip but could not resist this, having watched the activity at the nest box this afternoon.
We first noticed an incomer carrying a long piece of grass so continued focussing on the box. Later this came in with an enormous downy feather, if the nights continue as cold as at present they'll need a few of those.

I also caught one of them flying off so have included that as an extra. Note that the dreaded reflections have not helped the images, I've done my best to correct them.