Weather-vane

Visited my Mum today. Waiting at the bus-stop in Olney at the start of the long trip home I cast my eyes skywards and noticed this for the first time! What's it's all about I cannot tell you! However Jolang has very kindly researched it and you can read what she found out by scrolling down in the comments.

Meanwhile, OB was hard at work in the factory.

Square September continues.