Common Sandpiper - Actitis hypoleucos

Common Sandpiper - Actitis hypoleucos - Ardnamurchan
Canon 600mm f5 for 1/2500th @ iso400

If anything is going to give your presence away it is the Sandpiper, when disturbed they fly for metres along the beach calling out with a shrill call - there is no escaping them as they alert everything in the vicinity to your presence.