Warakagoda, D. 2006. Sri Lanka's Serendip Scops Owl. BirdingASIA 6: 68-71.
Warakagoda, D. H.; Rasmussen, P. C. 2004. A new species of scops-owl from Sri Lanka. Bulletin of the British Ornithologists' Club 124: 85-105.
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Recommended citation
BirdLife International (2024) Species factsheet: Serendib Scops-owl Otus thilohoffmanni. Downloaded from
https://datazone.birdlife.org/species/factsheet/serendib-scops-owl-otus-thilohoffmanni 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.