Sao Tome Grosbeak Crithagra concolor

Family: Fringillidae (Finches and Hawaiian honeycreepers)

Authority: (Barboza du Bocage, 1888)

Red List Category

Criteria: C2a(ii)

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Justification of Red List category
This species qualifies as Critically Endangered because it has a very small population which is suspected to be in decline owing to habitat degradation. It is found in one location only, where it occupies a very small area of primary forest which, although it is not severely threatened, remains unprotected and might be vulnerable in the future. Introduced predators could also potentially be impacting the population. Recent observations extend the known range, elevation and habitat, but the known population currently remains very small.

BirdLife Species Guardian: SPEA (Portugal)

Population size: 50-249

Population trend: Decreasing

Extent of occurrence (breeding/resident): 220 km2

Country endemic: Yes

Land-mass type - oceanic island
Realm - Afrotropical
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2021) Species factsheet: Crithagra concolor. Downloaded from on 22/09/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 22/09/2021.