Essentially a North American Arctic breeder, this neat Calidris sandpiper is the commonest wader from across the Atlantic each autumn (though it is still a pretty scarce bird). Most birds we see are juveniles, with neatly patterned warm coloured feathering and obvious white lines forming Vs on the back. They are roughly Dunlin sized (some are smaller, some larger) though slimmer and longer winged with a proportionally smaller head, pale (yellow-green) legs and a well defined dark-streaked breast. They also have a more creeping gait than Dunlins. Beware confusion with larger, buffer juvenile Ruffs, and even juvenile Redshanks. Pectoral Sandpipers have a preference for freshwater habitats, and could be at suitable wader habitat well inland.