del Hoyo, J., Elliott, A., Sargatal, J. 1997. Handbook of the Birds of the World, vol. 4: Sandgrouse to Cuckoos. Lynx Edicions, Barcelona, Spain.
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Recommended citation
BirdLife International (2024) Species factsheet: Blue-crowned Hanging-parrot Loriculus galgulus. Downloaded from
https://datazone.birdlife.org/species/factsheet/blue-crowned-hanging-parrot-loriculus-galgulus on 27/12/2024.
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 27/12/2024.