Birds on the wing

This is the Keer Channel on Morcambe Bay, just south of Carnforth. I heard this flight of birds before I saw them. As to what they are, they were moving so fast that even my fast shutter speed fails to make them out that good. My research makes me think they might be Golden plover (Pluvialis apricaria) that are known to visit this area. Maybe somebody may know better.

Enjoy full screen.