Seagull walk-a-thon

This isn't a great picture, but I had to capture a quick snap of these seagulls 'walking' around and around the field at the back of the house. I've lived here for 13 years and have never seen this performance before today. I didn't have time to study them, but they all appeared to be walking in the same direction - clockwise! According to GravyC, they'd been there all day.......