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Year of most recent IBA criteria assessment: 2003

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Tundra Swan Cygnus columbianus	LC	passage	1995-2000	180 individuals	A4i, B1i, C2
Barnacle Goose Branta leucopsis	LC	passage	1991-1999	3,000-5,300 individuals	A4i, B1i, C2
Greylag Goose Anser anser	LC	passage	1993-2000	300 individuals	B1i, C3
Gadwall Mareca strepera	LC	breeding	1996-1997	140 breeding pairs	B1i, C3
Gadwall Mareca strepera	LC	passage	1995-1999	300-500 individuals	B1i, C3
Horned Grebe Podiceps auritus	VU	breeding	1996-1998	15 breeding pairs	C6
Little Crake Zapornia parva	LC	breeding	1996	3 breeding pairs	C6
Dunlin Calidris alpina	LC	breeding	1996-1997	15 breeding pairs	C6
Little Gull Hydrocoloeus minutus	LC	breeding	1996-1997	25 breeding pairs	B2
Little Tern Sternula albifrons	LC	breeding	1993-1999	5-10 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	1996-1997	70 breeding pairs	C6
Arctic Tern Sterna paradisaea	LC	breeding	1993-1997	155-210 breeding pairs	C6

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Protection status:

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
West Estonian Archipelago	UNESCO-MAB Biosphere Reserve	1,560,000	protected area contains site	3,902
Siiksaare-Oessaare hoiuala	Hoiuala	1,518	protected area overlaps with site	0
Siiksaare-Oessaare hoiuala	Limited Management Zone	1,510	protected area contained by site	1,510
Siiksaare-Oessaare	Special Protection Area (Birds Directive)	3,973	is identical to site	3,874
Siiksaare-Oessaare	Site of Community Importance (Habitats Directive)	3,973	is identical to site	3,874
Nässumaa	Site of Community Importance (Habitats Directive)	274	protected area is adjacent to site	0
Nässuma hoiuala	Hoiuala	274	protected area is adjacent to site	0
Laidevahe Nature Reserve	Nature Reserve	2,442	protected area contained by site	2,442
Laidevahe Nature Reserve	Ramsar Site, Wetland of International Importance	2,424	protected area contained by site	2,442
Laidevahe looduskaitseala	Looduskaitseala	2,455	protected area contained by site	0
Laidevahe LKA, Silma skv.	Looduskaitseala hooldatav sihtkaitsevöönd	159	protected area contained by site	0
Laidevahe LKA, Siiksaare pv.	Looduskaitseala piiranguvöönd	215	protected area contained by site	0
Laidevahe LKA, Sandla skv.	Looduskaitseala hooldatav sihtkaitsevöönd	787	protected area contained by site	0
Laidevahe LKA, Rukla skv.	Looduskaitseala looduslik sihtkaitsevöönd	108	protected area contained by site	0
Laidevahe LKA, Põldealuse skv.	Looduskaitseala hooldatav sihtkaitsevöönd	239	protected area contained by site	0
Laidevahe LKA, Oessaare skv.	Looduskaitseala hooldatav sihtkaitsevöönd	128	protected area contained by site	0
Laidevahe LKA, Liivi lahe skv.	Looduskaitseala hooldatav sihtkaitsevöönd	92	protected area contained by site	0
Laidevahe LKA, Liivi lahe pv.	Looduskaitseala piiranguvöönd	470	protected area contained by site	0
Laidevahe LKA, Laidevahe skv.	Looduskaitseala hooldatav sihtkaitsevöönd	229	protected area contained by site	0
Laidevahe LKA, Kukessaare pv.	Looduskaitseala piiranguvöönd	30	protected area contained by site	0

IUCN Habitat	Habitat detail	Extent (% of site)
Forest	Broadleaved deciduous woodland, Native coniferous woodland	-
Wetlands (inland)	Water fringe vegetation, Standing freshwater	-
Sea		-
Grassland		-
Artificial/Terrestrial	Arable land	-
Shrubland		-
Coastline	Lagoons	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
fisheries/aquaculture	-
forestry	-
nature conservation and research	-
hunting	-
tourism/recreation	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Siiksaare-Oessaare bays. Downloaded from http://www.birdlife.org on 30/05/2020.