Woodpigeons come regularly to my bird table. These two arrived within a couple of minutes. I am not sure if they were a pair, but I doubt it, as they were not happy to be feeding so close. They alternated between feeding peacefully, and facing each other standing high on their tiptoes, chests up, measuring each other up. A bit of wing flapping occasionally - that is how woodpigeons fight, slapping each other with their powerful wings - but mostly just posturing. The photo was capture with my remote control camera.