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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Japanese Woodpigeon Columba janthina	LC	resident	2003	present	A2
Pleske's Grasshopper-warbler Helopsaltes pleskei	VU	breeding	2003	present	A1
A4iv Species group - soaring birds/cranes	n/a	passage	2003	min 20,000 individuals	A4iv

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.

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%)	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	Unknown	Very little or no conservation action taking place	negligible

Year	Protected Area	Designation	% overlap with IBA
1961	Mitake	都道府県指定鳥獣保護区	2
1964	Takakobuyama	都道府県指定鳥獣保護区	1
1967	Sago	都道府県指定鳥獣保護区	<1
1967	Toyo chugakko aigorin	都道府県指定鳥獣保護区	<1
1968	Iki-Tsushima	国定公園	16
1969	Shiratake	都道府県指定鳥獣保護区	1
1969	Otsuki shochugakko aigorin	都道府県指定鳥獣保護区	<1
1971	Taterasan	都道府県指定鳥獣保護区	1
1972	Kisaka	都道府県指定鳥獣保護区	1
1976	Myoken	都道府県自然環境保全地域	<1
1976	Oumi kaigan	都道府県自然環境保全地域	<1
1976	Nesozaki	都道府県自然環境保全地域	<1
1976	Nemunoki	都道府県自然環境保全地域	<1
1976	Mogi kaigan	都道府県自然環境保全地域	<1
1978	Tsushima Kanzaki	Marine Park	<1
1983	Shushigawa	都道府県指定鳥獣保護区	1
1986	Seibu chugakko aigorin	都道府県指定鳥獣保護区	<1
1986	Kechi chugakko aigorin	都道府県指定鳥獣保護区	<1
1986	Toyotama chugakko aigorin	都道府県指定鳥獣保護区	<1
1989	Ina	国指定鳥獣保護区	2
1989	Sasuna	都道府県指定鳥獣保護区	<1
1992	Naiinjima	都道府県指定鳥獣保護区	<1
1995	Shimayamajima	都道府県指定鳥獣保護区	1
1995	Kuroshima	都道府県指定鳥獣保護区	<1
2002	Shushinouchi	都道府県指定鳥獣保護区	<1
2002	Saozaki	都道府県指定鳥獣保護区	<1

Habitat1	Habitat detail	% of IBA
Forest		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tsushima islands (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/tsushima-islands-iba-japan on 23/11/2024.