Arenaria interpres interpres
Mathew considered it a rather rare autumn visitor to the coast, and knew of no spring record. It is now to be seen on the coasts and islands at all times of the year, and even in full breeding plumage, though the majority of the numerous midsummer records are of immature birds. Usually in small parties in summer, but large flocks have been seen in autumn (100-200 at mouth of Teifi estuary, by T.Ground, 5 Sept 1913, and winter (R.M.L. saw 120-150 at Goodwick, 29/31 Jan 1948).