Isabela Oriole
CR

Isabela Oriole

Oriolus isabellae

Declining

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Isabela_oriole

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Oriolus isabellae faces severe population decline primarily due to extensive deforestation and habitat conversion across its limited range in the northern Philippines. Mining operations, agricultural expansion, and logging have fragmented the remaining lowland and montane forest patches essential for this oriole's survival. The species' restricted distribution makes it particularly vulnerable to localized habitat destruction, with remaining populations increasingly isolated in small forest fragments.

Threat summary

Habitat

This critically endangered oriole inhabits primary and secondary lowland forests, as well as montane forests up to 1,200 meters elevation in the northern Philippines. The species requires dense forest canopy for foraging and nesting, showing preference for areas with diverse fruiting trees and insect-rich environments.

Forest· major

Conservation measures underway

Site/area protectionSpecies recoveryAwareness & communicationsCompliance and enforcementLinked enterprises & livelihood alternatives

Other threatened species in ORIOLIDAE

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Sao Tome OrioleVU

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Oriolus crassirostris

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Threatened in Philippines

Acropora hemprichiiEN

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Montipora calcarea

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Montipora taiwanensis

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Frequently asked questions

Why is Isabela Oriole classified as Critically Endangered?
Isabela Oriole is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Oriolus isabellae faces severe population decline primarily due to extensive deforestation and habitat conversion across its limited range in the northern Philippines. Mining operations, agricultural expansion, and logging have fragmented the remaining lowland and montane forest patches essential for this oriole's survival. The species' restricted distribution makes it particularly vulnerable to localized habitat destruction, with remaining populations increasingly isolated in small forest fragments.
Where does Isabela Oriole live?
Isabela Oriole occurs in Philippines. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Isabela Oriole?
The main threats to Isabela Oriole are 2.1, 5.3, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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