Not too long ago we hung this little devise on the balcony. A chicken wire »tube« stuffed with natural, unbleached felting wool. For the birds' nests. I didn't have any expectations as to how fast, or if, even, they'd find it ...
but the next day, surely, there it was, a little Titmouse, plucking away at the wool.
Needless to say, I was totally mesmerized by this little creature, I even got so keep on catching her on camera, I got in half an hour later for work! Thank goodness, I'm my own boss! ;o)
She's been around every day since. The tube is almost empty now. We'll have to fill er up :-)
...
Up in a tree, in a nest somewhere, little Titmice come into the world in our wool. I shan't ever ask for more...