Weather vane or weather cock?

Which direction is the wind from?

Saturday 23rd May 2015

Sat having a glass of wine and a barbecue at my son's house. Looked up and did a double take. Although he has been in the house for two years and I have visited quite a bit, I had never noticed this weather vane (or in this case a weather cock) on his shed! They come in various shapes and sizes, but I think this is quite simple and in keeping with the countryside. The idea is that the arrow points to the direction that the wind is coming from (in this case about SE). I thought, as I sat there, that the wind was probably coming from the west. Looking at the rust around the shaft, it could be that it is not working properly? Must investigate further with an oil can!