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The site was identified as internationally important for bird conservation in 2022 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Long-tailed Duck Clangula hyemalis	VU	passage (2008)	min 66,892 birds	A1, A4, B3a, C1, C3
Long-tailed Duck Clangula hyemalis	VU	winter (2016–2021)	2,791–48,855 birds	A1, A4, B3a, C1, C3
Common Eider Somateria mollissima	NT	passage (2008)	min 10,032 birds	B1a, B3a, C1, C3
Common Eider Somateria mollissima	NT	non-breeding (2008)	min 1,607 birds	B1a, C1
Velvet Scoter Melanitta fusca	VU	winter (2021)	min 208 birds	A1, C1
Common Scoter Melanitta nigra	LC	non-breeding (1993–1996)	1–20,000 birds	A4i, B1i, C3
Common Goldeneye Bucephala clangula	LC	passage (1996)	10,000 birds	A4i, B1i, C3
Greater Scaup Aythya marila	LC	passage (1996)	10,000 birds	A4i, B1i, C3
European Nightjar Caprimulgus europaeus	LC	breeding (1998–2003)	50 pairs	C6
Eurasian Eagle-owl Bubo bubo	LC	breeding (1987–2001)	4–5 pairs	C6
Woodlark Lullula arborea	LC	breeding (1991–1999)	50 pairs	C6
A4iii Species group - waterbirds	n/a	passage (-)	100,000-499,999 birds	A4iii, C4

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Nõva LKA, Roosta pv.	Limited management zone of nature reserve (VI)	<1
1937	Järvekivi	Kaitstav looduse üksikobjekt (III)	-
1939	Põõsaspea neeme rändrahn	Kaitstav looduse üksikobjekt (III)	-
1959	Osmussaare II rahnuderühm	Kaitstav looduse üksikobjekt (III)	-
1959	Osmussaare kaksikud	Kaitstav looduse üksikobjekt (III)	-
1959	Nõva maastikukaitseala	Landscape Protection Area (-)	6
1959	Osmussaare I rahnuderühm	Kaitstav looduse üksikobjekt (III)	-
1996	Osmussaare maastikukaitseala	Landscape Protection Area (-)	2
2005	Nõva-Osmussaare hoiuala (Harjumaa)	Hoiuala (VI)	1
2006	Osmussaare MKA, Osmussaare skv	Maastikukaitseala hooldatav sihtkaitsevöönd (V)	2
2006	Nõva-Osmussaare hoiuala	Limited Management Zone (-)	67
2010	Osmussaare MKA, Bieni pv.	Maastikukaitseala piiranguvöönd (V)	<1
2010	Osmussaare MKA, Lõunasadama pv.	Maastikukaitseala piiranguvöönd (V)	<1
2010	Osmussaare MKA, Tuletorni pv.	Maastikukaitseala piiranguvöönd (V)	<1
2010	Osmussaare MKA, Tiiru skv	Maastikukaitseala looduslik sihtkaitsevöönd (Ib)	<1
2010	Tuksi püsielupaik	Species Protection Site (-)	<1
2017	Nõva-Osmussaare hoiuala (Läänemaa)	Hoiuala (VI)	88
2017	Nõva LKA, Peraküla skv.	Managed conservation zone of nature reserve (IV)	4
2017	Nõva LKA, Keibu skv.	Wilderness conservation zone of nature reserve (Ib)	2
2017	Nõva LKA, Rooslepa skv.	Wilderness conservation zone of nature reserve (Ib)	1
2017	Nõva LKA, Mustjärve skv.	Managed conservation zone of nature reserve (IV)	1
2017	Nõva LKA, Liivanõmme pv.	Limited management zone of nature reserve (VI)	1
2017	Nõva LKA, Uuejõe skv.	Wilderness conservation zone of nature reserve (Ib)	<1
2017	Nõva LKA, Põõsaspea skv.	Wilderness conservation zone of nature reserve (Ib)	<1
2017	Nõva LKA, Liivase pv.	Limited management zone of nature reserve (VI)	<1
2017	Nõva LKA, Lepaaugu pv.	Limited management zone of nature reserve (VI)	<1
2017	Nõva LKA, Pikane skv.	Managed conservation zone of nature reserve (IV)	<1
2017	Nõva LKA, Dirhami pv.	Limited management zone of nature reserve (VI)	<1
2017	Nõva LKA, Lepajõe pv.	Limited management zone of nature reserve (VI)	<1

Habitat	% of IBA	Habitat detail
Marine Neritic	87
Forest	6	Native coniferous woodland
Wetlands (inland)	5	Water fringe vegetation
Shrubland	2

Land use	% of IBA
nature conservation and research	99
fisheries/aquaculture	85
forestry	4
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Nõva-Osmussaar (Estonia). Downloaded from https://datazone.birdlife.org/site/factsheet/nõva-osmussaar-iba-estonia on 28/12/2024.