I've been invaded!!!

..by ladybirds (or bugs). The weather started a bit wet and windy this morning but then turned to torrential rain and really gusting winds. The leaves were coming off the trees in bucket fulls. Suddenly the wind stopped.....the rain stopped...and the sun came out. It was glorious. And then it happened....hundreds of ladybirds flying and settling on the walls doors and windows on the south side of the houses. It was amazing! My sons have been laughing at me 'cos I've been all round the house, carefully removing the ones that have come indoors through open windows and vents. I don't know what caused this strange behaviour but it was certainly a sight to watch.