Sandpipers

These Rock Sandpipers were sitting on the beach by the harbor, out of the wind and in the sun.  The tide was going back out, and you can see the high tide line, with the snow above it.  
Some were resting and some were stretching or preening.  The sound was fascinating; as people would come by, the birds would start talking, but then they would quiet back down. About half an hour later they started flying away in small groups, and we never di find them again.
Even taking this with a 400 mm lens, I cropped it to get it right down to just birds.  They were grouped together in sort of a long group along the water line.  I would love to get a picture of just solid bird bodies!!  I have tried to get a good photo of them flying, but I haven't accomplished that yet.

5d mkii, 100-400 L lens @ 400 mm
ISO 800, 1/800 sec, f10
Cropped about 40%, Shadows/Highlights, color balance, sharpen

Comments and critiques welcomed!