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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
Ryukyu Green-pigeon Treron permagnus	LC	resident	2003	present	A2
Okinawa Rail Hypotaenidia okinawae	EN	resident	2001	900 breeding pairs	A1, A2
Amami Woodcock Scolopax mira	VU	resident	2003	present	A1, A2
Ryukyu Scops-owl Otus elegans	NT	resident	2003	present	A2
Okinawa Woodpecker Dendrocopos noguchii	EN	resident	1990-1994	146-584 individuals	A1, A2
Ryukyu Minivet Pericrocotus tegimae	LC	resident	2003	present	A2
Okinawa Robin Larvivora namiyei	NT	resident	2003	present	A2

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 (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	likely in long term (beyond 4 years)	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low

Year	Protected Area	Designation	% overlap with IBA
1965	Nagodake	都道府県指定鳥獣保護区	1
1965	Sate	都道府県指定鳥獣保護区	<1
1965	Nishimedake	都道府県指定鳥獣保護区	<1
1972	Okinawakaigan	国定公園	28
1974	Yonahadake	都道府県指定鳥獣保護区	2
2009	Yanbaru(Yasuda)	国指定鳥獣保護区	3
2009	Yanbaru(Aha)	国指定鳥獣保護区	1

Habitat1	Habitat detail	% of IBA
Forest		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Yambaru, northern Okinawa forest (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/yambaru-northern-okinawa-forest-iba-japan on 22/11/2024.