Got round to climbing a ladder yesterday to clean out my birdbox. Bit sad to find four unhatched eggs. No idea what has happened, but maybe the neighbourhood cats have something to do with it. Ah well, there's always next year.
That's a shame, maggie. I emptied mine on Sunday and all mine had gone. The nest was huge. It nearly filled the whole box. Most of it was made from my German Shepherd's hair.