Confidence: I'm as sure as I can be.
Notes: Wingspan 4 feet 3 inches at full stretch. Little more than a scavanged skeleton but surprisingly the head was present. Found washed up on the beach among seaweed. This is the more surprising of an assortment of bird remains found on a beach on Saturday including 10 Redwing, a Great Black-backed Gull, an unidentified gull(only legs and tail), 2 Guillemots, a Redshank, and a Feral Pigeon.