Recommended citation
BirdLife International (2024) Species factsheet: Green-bearded Helmetcrest Oxypogon guerinii. Downloaded from
https://datazone.birdlife.org/species/factsheet/green-bearded-helmetcrest-oxypogon-guerinii on 26/11/2024.
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 26/11/2024.