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The site was identified as internationally important for bird conservation in 2022 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

Populations meeting IBA criteria ('key species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Masatierra Petrel Pterodroma defilippiana	VU	breeding (-)	10,000-19,999 individuals	A1, A4
Masatierra Petrel Pterodroma defilippiana	VU	breeding (2015–2021)	min 1,500 individuals	A1, A4

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2022. The most recent assessment (2014) is shown below.

State (condition of the key species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Coastal/Supratidal	-	good (>90%)	favourable

Pressure (threats to the key species and/or their habitats)
Threat	Timing	Scope	Severity	Result
No known threats	happen­ing now	whole popul­ation/area (>90%)	no deteri­oration (<1% over 3 gener­ations)	low

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Little/none of site covered (<10%)	No manage­ment planning has taken place	Very little or no conservation action taking place	very low

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	major (>10)

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Islas Desventuradas (Chile). Downloaded from https://datazone.birdlife.org/site/factsheet/islas-desventuradas-iba-chile on 13/01/2025.