Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.

Gavia stellata - Red-throated Diver

Range & Status

Holarctic; in Britain and Ireland 1200 breeding pairs (Scotland, Northern Ireland); 4850 in winter.

Regional Distribution

Cornwall: winter visitor and passage migrant in small numbers, with peak totals of some 100 birds from January to March. Chief sites are Trevose Head/Harlyn Bay, Newquay, Hell' s Mouth and Seaton. It is a scarce visitor to Isles of Scilly.

Habitat & Ecology

Occurs in shallow, sandy bays, chiefly along the north Cornwall coast.


Inshore fishing (monofilament nets) and oil pollution.


Monitoring of winter numbers. Protected under Schedule 1 of Wildlife and Countryside Act 1981 and Annexe 1 of European Union Conservation of Wild Birds Directive. Listed (long list) as a globally threatened/declining species (BSGR, 1995).


I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.

The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.

Cornish Biodiversity Network. 2017.