St Margaret's Island (

Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peop ...

: Ynys Farged) is a small

tidal island A tidal island is a piece of land that is connected to the mainland by a natural or man-made causeway that is exposed at low tide and submerged at high tide. Because of the mystique surrounding tidal islands, many of them have been sites of ...

to the northwest of

Caldey Island Caldey Island ( Welsh:''Ynys Bŷr'') is a small island near Tenby, Pembrokeshire, Wales, less than off the coast. With a recorded history going back over 1,500 years, it is one of the holy islands of Britain. A number of traditions inherited ...

Carmarthen Bay Carmarthen Bay ( cy, Bae Caerfyrddin) is an inlet of the South Wales coast, including notable beaches such as Pendine Sands and Cefn Sidan sands. Carmarthen Bay is partially within the Pembrokeshire Coast National Park. The Joint Nature Conserva ...

, Pembrokeshire, Wales.

Name

The island derives its modern (English) name from a chapel that was built there, probably in the 17th century. The island has also been known as Little Caldey.

Description

At high tide the island is separated from Caldey Island by Little Sound. There are a number of ruins on the island. There is no public access to the island; access on foot from Caldey is ill-advised. Its highest point is and its area is . The waters around the island are popular with

divers Diver or divers may refer to: *Diving (sport), the sport of performing acrobatics while jumping or falling into water *Practitioner of underwater diving, including: **scuba diving, **freediving, **surface-supplied diving, **saturation diving, a ...

History

Religious connections to the island date back to at least 1748. In

Victorian times In the history of the United Kingdom and the British Empire, the Victorian era was the period of Queen Victoria's reign, from 20 June 1837 until her death on 22 January 1901. The era followed the Georgian period and preceded the Edwardi ...

the chapel was converted into housing for local

quarry A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their envir ...

workers, who mined

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

on the island, which was abandoned by 1851. The buildings subsequently fell into ruin. The chapel ruins and a field enclosure are recorded by the Royal Commission on Ancient monuments. Since 1950 the island has been leased from Picton Castle Estate. It is designated a Site of Special Scientific Interest. It is managed by The Wildlife Trust of South & West Wales, with management limited to monitoring seabird populations owing to difficult access.

Wildlife

St Margaret's Island is a sensitive conservation site because of the birds that nest on its cliffs: cormorants (the largest population of this species in Wales, constituting 3% of the total British population),

guillemot Guillemot is the common name for several species of seabird in the Alcidae or auk family (part of the order Charadriiformes). In British use, the term comprises two genera: '' Uria'' and ''Cepphus''. In North America the ''Uria'' species ...

razorbill The razorbill, razor-billed auk, or lesser auk (''Alca torda'') is a colonial seabird and the only extant member of the genus '' Alca'' of the family Alcidae, the auks. It is the closest living relative of the extinct great auk (''Pinguinis im ...

s, shags,

kittiwake The kittiwakes (genus ''Rissa'') are two closely related seabird species in the gull family Laridae, the black-legged kittiwake (''Rissa tridactyla'') and the red-legged kittiwake (''Rissa brevirostris''). The epithets "black-legged" and "red-l ...

great black-backed gull The great black-backed gull (''Larus marinus'') is the largest member of the gull family. Described by the Cornell Lab of Ornithology as "the king of the Atlantic waterfront", it is a very aggressive hunter, pirate, and scavenger. It breeds on t ...

lesser black-backed gull The lesser black-backed gull (''Larus fuscus'') is a large gull that breeds on the Atlantic coasts of Europe. It is migratory, wintering from the British Isles south to West Africa. It has increased dramatically in North America, most common alo ...

s and herring gulls. Puffins breed in rock fissures, but the existence of

brown rat The brown rat (''Rattus norvegicus''), also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat, Norwegian rat and Parisian rat, is a widespread species of common rat. One of the largest muroids, it is a brown o ...

s prevents burrow nests.

Vegetation

Common vegetation is red fescue, common nettle, hogweed, false oat grass and cocksfoot. On seaward edges sea beet, common scurvy grass and common mallow can be seen.

References

{{Pembrokeshire Islands of Pembrokeshire