Blue Tit visiting shed

For the last couple of days I've seen a blue tit going in and out of our shed through the little window which is always open. I can't see or hear any sign of a nest in there. Could it be collecting things for nest building.....I thought they would have been finished with that by now.
0
Posts
If you live in Derbyshire, as I do.
@tui34 sorry I can't be of help with that but in our area we don't see swallows so much. Hopefully they will be back to finish building.