If it's one wader you could almost guarantee to see on the coast in Spring it'd be the Purple Sandpiper. Long before the Ruddy Turnstones, Redshank or the other waders return, you'll see them flitting about the rocky shores on the coast. These are cute little fellas, position yourself quiet enough along their feeding path, they'd come really close.
As the season shift from Spring to Summer, the focus returns to waders ... the long (throughout winter months anyway) awaited return of the waders. Northern Lapwing and Oystercatchers are slowly filling up the fields, their calls reminding you of that fabulous summer around the corner.
Purple Sandpiper is a great start to wader watching for the birding season.