• Summary
• Text account
• Data table and detailed info
• Range map
• Resources

Recommended citation
BirdLife International (2025) Species factsheet: Bioko Speirops Zosterops brunneus. Downloaded from https://datazone.birdlife.org/species/factsheet/bioko-speirops-zosterops-brunneus on 16/01/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 16/01/2025.