Database release:

For Special Protection Areas (SPA),
Proposed Sites for Community Importance (pSCI),
Sites of Community Importance (SCI) and
for Special Areas of Conservation (SAC)



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1.1 Type


1.2 Site code


1.3 Site name

Duvillaun Islands SPA

1.4 First Compilation date


1.5 Update date


1.6 Respondent:

Name/Organisation:National Parks and Wildlife Service, Department of Culture, Heritage and the Gaeltacht

1.7 Site indication and designation / classification dates

Date site classified as SPA:2009-03
National legal reference of SPA designation No information provided


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2.1 Site-centre location [decimal degrees]:


2.2 Area [ha]


2.3 Marine area [%]


2.4 Sitelength [km] (optional):

No information provided

2.5 Administrative region code and name

NUTS level 2 code Region Name
IE01Border, Midland and Western

2.6 Biogeographical Region(s)

Atlantic (0.00 %)


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3.1 Habitat types present on the site and assessment for them

No habitat types are reported for the site

3.2 Species referred to in Article 4 of Directive 2009/147/EC and listed in Annex II of Directive 92/43/EEC and site evaluation for them

Species Population in the site Site assessment
G Code Scientific Name S NP T Size Unit Cat. D.qual. A|B|C|D A|B|C
      MinMax  Pop.Con.Iso.Glo.
BA045Branta leucopsis    200  500   
BA103Falco peregrinus     
BA009Fulmarus glacialis    638  638   
BA014Hydrobates pelagicus    1150  1150   
BA017Phalacrocorax carbo    20  100   
BA346Pyrrhocorax pyrrhocorax     
  • Group: A = Amphibians, B = Birds, F = Fish, I = Invertebrates, M = Mammals, P = Plants, R = Reptiles
  • S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
  • NP: in case that a species is no longer present in the site enter: x (optional)
  • Type: p = permanent, r = reproducing, c = concentration, w = wintering (for plant and non-migratory species use permanent)
  • Unit: i = individuals, p = pairs or other units according to the Standard list of population units and codes in accordance with Article 12 and 17 reporting (see reference portal)
  • Abundance categories (Cat.): C = common, R = rare, V = very rare, P = present - to fill if data are deficient (DD) or in addition to population size information
  • Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation); VP = 'Very poor' (use this category only, if not even a rough estimation of the population size can be made, in this case the fields for population size can remain empty, but the field "Abundance categories" has to be filled in)

3.3 Other important species of flora and fauna (optional)


Population in the site


Group CODE Scientific Name S NP Size Unit Cat. Species Annex Other categories
     MinMax C|R|V|PIVVABCD
Cepphus grylle    25  25             
Larus marinus    144  144             
  • Group: A = Amphibians, B = Birds, F = Fish, Fu = Fungi, I = Invertebrates, L = Lichens, M = Mammals, P = Plants, R = Reptiles
  • CODE: for Birds, Annex IV and V species the code as provided in the reference portal should be used in addition to the scientific name
  • S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
  • NP: in case that a species is no longer present in the site enter: x (optional)
  • Unit: i = individuals, p = pairs or other units according to the standard list of population units and codes in accordance with Article 12 and 17 reporting, (see reference portal)
  • Cat.: Abundance categories: C = common, R = rare, V = very rare, P = present
  • Motivation categories: IV, V: Annex Species (Habitats Directive), A: National Red List data; B: Endemics; C: International Conventions; D: other reasons


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4.1 General site character

Habitat class % Cover

Total Habitat Cover


Other Site Characteristics

The site comprises a group of uninhabited marine islands, rocks and reefs, located between 1 and 5 km off the southern tip of the Mullet Peninsula in Co. Mayo. The surrounding seas to a distance of 200 m from the shoreline, where seabirds forage, bathe and socialise, are included in the site. Duvillaun More is the largest of the islands, rising to 63 m, with cliffs on the north-west, west and south-west sides. About two-thirds of this island is covered by a maritime grassland sward. There is a small area of dry heath at the west end of the island near the summit. Duvillaun Beg, which rises to 14 m, also has a grassy sward and an extensive intertidal shore. The other islands, while having some land above the high tide mark, are largely rocky islets and knolls. From west to east, the lesser islands are Turduvillaun, Shiraghy Islands, Drumacappul Islands, Orragoon Island, Keely Island, Gaghta Island and Leamareha Island.

4.2 Quality and importance

The site is an important seabird colony, with nationally important populations of Hydrobates pelagicus, Fulmarus glacialis and Larus marinus. In winter, the Duvillauns support Branta leucopsis - up to 500 birds can occur; these are part of a much larger population centred on the Mullet Peninsula and Inishkea Islands. The site is a traditional nesting location for Falco peregrinus and 1-2 pairs of Pyrrhocorax pyrrhocorax breed. The Duvillauns form part of a larger group of islands, which hold one of the largest breeding populations of Halichoerus grypus in Ireland, a species listed on Annex II of the E.U. Habitats Directive.

4.3 Threats, pressures and activities with impacts on the site

The most important impacts and activities with high effect on the site

Negative Impacts
RankThreats and pressures [code]Pollution (optional) [code]inside/outside [i|o|b]
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]

Rank: H = high, M = medium, L = low
Pollution: N = Nitrogen input, P = Phosphor/Phosphate input, A = Acid input/acidification,
T = toxic inorganic chemicals, O = toxic organic chemicals, X = Mixed pollutions
i = inside, o = outside, b = both

4.4 Ownership (optional)

No information provided

4.5 Documentation (optional)

Cabot, D. (1967). The birds of Duvillaun More Island, Co. Mayo. Irish Naturalists' Journal 15: 357-359.Hunt, J., Derwin, J., Coveney, J. and Newton, S. (2000). Republic of Ireland. Pp. 365-416 in Heath, M.F. and Evans, M.I. (eds). Important Bird Areas in Europe: Priority Sites for Conservation 1: Northern Europe. Cambridge, UK: BirdLife International (BirdLife Conservation Series No. 8). Gray, N., Thomas, G., Trewby, M. and Newton, S. (2003). The status and distribution of Chough Pyrrhocorax pyrrhocorax in the Republic of Ireland. Irish Birds 7: 147-156.Hutchinson, C.D. (1989). Birds in Ireland. Poyser, London. Lloyd, C. (1982). Inventory of Seabird Breeding Colonies in Republic of Ireland. Unpublished report, Forest and Wildlife Service, Dublin.Madden, B., Hunt, J. and Norriss, D. (In prep.). The Status of Breeding Peregrines in the Republic of Ireland, 2002. Merne, O.J. (1989). Important Bird Areas in the Republic of Ireland. In: Grimmett, R.F.A. and Jones, T.A. (eds). Important Bird Areas in Europe. ICBP Technical Publication No. 9, Cambridge. Merne, O.J. and Walsh, A. (1994). Barnacle Geese in Ireland, spring 1993 and 1994. Irish Birds 5: 151-156.Merne, O.J. and Walsh, A. (2002). Barnacle Geese in Ireland, spring 1999. Irish Birds 7: 53-56.Mitchell, P.I., Newton, S.F., Ratcliffe, N. and Dunn, T.E. (2004). Seabird Populations of Britain and Ireland. Poyser, London. Ruttledge, R.F. (1966). Ireland's Birds. Witherby, London.Trewby, M., Gray, N., Cummins, S., Thomas, G. and Newton, S. (2006). The status and ecology of the Chough Pyrrhocorax pyrrhocorax in the Republic of Ireland 2002-2005. Final Report of Birdwatch Ireland Chough Survey Team - Unpublished. Whilde, A. (1985). The All Ireland Tern Survey 1984. Unpublished report for the Irish Wildbird Conservancy, Dublin.


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6.1 Body(ies) responsible for the site management:

No information provided

6.2 Management Plan(s):

An actual management plan does exist:

No, but in preparation

6.3 Conservation measures (optional)

No information provided



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