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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
Black-tailed Gull Larus crassirostris	LC	breeding	2003	present	A4i
Japanese Robin Larvivora akahige	LC	breeding	2003	present	A3

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
Grassland	good (> 90%)	very poor (< 40%)	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	No management planning has taken place	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1974	Rishiri rebun sarobetsu	国立公園	47
1985	Rishiri	都道府県指定鳥獣保護区	95
1985	Rishiri	Prefectural Wildlife Protection Area	100

Habitat1	Habitat detail	% of IBA
Grassland		-
Marine Coastal/Supratidal		-

1. IUCN Habitat classification.

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