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The site was identified as internationally important for bird conservation in 2004 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
Copper Pheasant Syrmaticus soemmerringii	NT	resident (2003)	present	A3
Latham's Snipe Gallinago hardwickii	NT	breeding (2003)	present	A3
Japanese Woodpecker Picus awokera	LC	resident (2003)	present	A3
Ashy Minivet Pericrocotus divaricatus	LC	breeding (2003)	present	A3
Varied Tit Sittiparus varius	LC	resident (2003)	present	A3
Brown-headed Thrush Turdus chrysolaus	LC	resident (2003)	present	A3
Japanese Accentor Prunella rubida	LC	resident (2003)	present	A3
Grey Bunting Emberiza variabilis	LC	breeding (2003)	present	A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2015) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	good (>90%)	good (>90%)	good

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Natural system modifications	likely in long term (>4 years)	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Whole area (>90%) covered by appropriate conservation designation	No management planning has taken place	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation (management category)	% coverage of IBA
1934	Nikko	国立公園 (V)	45
1949	Joshin'etsukogen	国立公園 (II)	5
1959	Uonuma renpo	都道府県立自然公園 (V)	4
1959	Okuhayade awasumon	都道府県立自然公園 (V)	1
1965	Sakatoyama	都道府県指定鳥獣保護区 (IV)	<1
1967	Marunuma sugenuma	都道府県指定鳥獣保護区 (IV)	1
1972	Komagadake	都道府県指定鳥獣保護区 (IV)	<1
1972	Hachijurigoe	都道府県指定鳥獣保護区 (IV)	<1
1973	Echigosanzan-Tadami	国定公園 (II)	27
1973	Nikko	都道府県指定鳥獣保護区 (IV)	5
1973	Tashiroyama	都道府県指定鳥獣保護区 (IV)	<1
1974	Gongendo yama-karamatsu yama	都道府県自然環境保全地域 (V)	<1
1976	Shibutsu san-kasatake seimen	都道府県自然環境保全地域 (V)	<1
1976	Asahidake - shiragamon yama tomen	都道府県自然環境保全地域 (V)	<1
1976	Shin michizawa	都道府県自然環境保全地域 (V)	<1
1976	Uramakihata keikoku	都道府県自然環境保全地域 (V)	<1
1977	Tonegawa genryubu	自然環境保全地域 (Ib)	1
1977	Kurotani	都道府県指定鳥獣保護区 (IV)	<1
1978	Hiragatake-shirasawa seimen	都道府県自然環境保全地域 (V)	<1
1979	Makihata yama tomen	都道府県自然環境保全地域 (V)	<1
1980	Tadami	都道府県指定鳥獣保護区 (IV)	5
1980	Mantaroyama	都道府県指定鳥獣保護区 (IV)	1
1980	Sumon	都道府県指定鳥獣保護区 (IV)	1
1980	Sennokurayama	都道府県指定鳥獣保護区 (IV)	1
1981	Oze	都道府県指定鳥獣保護区 (IV)	3
1981	Oze	都道府県指定鳥獣保護区 (IV)	2
1981	Takara gawa	都道府県自然環境保全地域 (V)	<1
1983	Yunotani okutadamiko	都道府県指定鳥獣保護区 (IV)	11
1984	Tanikawadake	都道府県指定鳥獣保護区 (IV)	1
1984	Hoshi	都道府県指定鳥獣保護区 (IV)	<1
1985	Gongendo	都道府県指定鳥獣保護区 (IV)	<1
1986	Yunishi gawa	都道府県自然環境保全地域 (V)	<1
1987	Yunishigawa	都道府県指定鳥獣保護区 (IV)	<1
1990	Water Source Area of the Tonegawa River and Area around Mt. Hiuchigatake	森林生態系保護地域 (Ib)	6
1997	Okutadami	都道府県指定鳥獣保護区 (IV)	6
1997	Oze	都道府県指定鳥獣保護区 (IV)	<1
1998	Echigosanzan	都道府県指定鳥獣保護区 (IV)	1
1998	Okukinu	都道府県指定鳥獣保護区 (IV)	<1
1998	Asakusadake	都道府県指定鳥獣保護区 (IV)	<1
2000	Mikuni Line	緑の回廊 (V)	4
2000	Echigo line	緑の回廊 (V)	4
2000	Nikko Line	緑の回廊 (V)	3
2003	Jujikyo	都道府県指定鳥獣保護区 (IV)	3
2006	Nikko and Azuma Mountains	緑の回廊 (V)	5
2007	Oku-Aizu	森林生態系保護地域 (Ib)	20
2007	Oze	国立公園 (V)	12
2007	Aizu Mountains	緑の回廊 (V)	4

Habitat	% of IBA	Habitat detail
Forest	-
Wetlands (inland)	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Okutadami, Okunikko and Okutone mountains (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/okutadami-okunikko-and-okutone-mountains-iba-japan on 23/12/2024.