• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Recommended citation
BirdLife International (2023) Species factsheet: Cuculus optatus. Downloaded from http://datazone.birdlife.org/species/factsheet/oriental-cuckoo-cuculus-optatus on 06/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 06/06/2023.