Pacific Golden Plover Pluvialis fulva
A very rare visitor to the UK from the east. This and American Golden Plover were formerly treated as races of one species, Lesser Golden Plover. They are often very hard to separate from one another and the bird shown below masqueraded as an American Golden Plover for several days, being seen by many competent birders before the revised identity was widely acknowledged.
Pacific Golden Plover, Breydon Water (Norfolk, UK), 31st July 2009