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BirdLife International (2024) Species factsheet: Red-knobbed Imperial-pigeon Ducula rubricera. Downloaded from
https://datazone.birdlife.org/species/factsheet/red-knobbed-imperial-pigeon-ducula-rubricera on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.