Hundreds of years ago many big houses had dovecotes for obviously doves but also pigeons. They were kept for meat, eggs and manure.
This one I found just as you come into my village and dates from the 17th century and looks lovely on the roadside. It's not in use anymore and it's a pity that modern cables come into view. I have been trying to take this picture for weeks but unfortunately the adjoining house has been under scaffolding and I didn't want that in the picture, you might just see it through the tree.
Best viewed with the magnify button above the pic.