• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

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
Streaked Shearwater Calonectris leucomelas	NT	breeding	2003	present	A4ii
Brown Booby Sula leucogaster	LC	breeding	2003	present	A4ii
Japanese Murrelet Synthliboramphus wumizusume	VU	breeding	2003	present	A1
Pleske's Grasshopper-warbler Helopsaltes pleskei	VU	breeding	2003	present	A1
Ryukyu Robin Larvivora komadori	NT	resident	2003	present	A2
A4iii Species group - seabirds	n/a	breeding	2003	min 10,000 breeding pairs	A4iii

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%)	moderate (70-90%)	near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happening now	some of area/population (10-49%)	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	Unknown	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1973	Danjogunto	国指定鳥獣保護区	100
2003	Common fishery right area(Nagasaki)	共同漁業権区域	4

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

1. IUCN Habitat classification.

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Danjo islands (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/danjo-islands-iba-japan on 22/11/2024.