Rare birds include raven, red-billed chough, peregrine, osprey, merlin and the red kite. Seals, cormorants, chough, wildfowl and seabirds, coastal wildflowers. The island is a breeding site for oystercatchers, chough, skylark and wheatear. Smaller birds include rock doves, azure-winged magpies and the native but rare red-billed chough. Storm petrels (largest breeding numbers in the world), roseate tern, chough, and corncrake. Other noteworthy species found in the park are the chough, nightjar, and osprey. The Alpine chough has two extant subspecies. The chough (in Cornish = "palores") is also used as a symbol of Cornwall. The flight of the Alpine chough is swift and acrobatic with loose deep wing beats. Fossils of both chough species were found in the mountains of the Canary Islands. Ants are a favoured food of the red-billed chough. Not all mentions of "chough" refer to this species. Three-quarters of the UK population of the red-billed chough resides in Wales. The Red-billed Chough is occasionally spotted. Her bardic name is Palores A-Bell (Chough from Afar in English).