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IUCN. 2018. The IUCN Red List of Threatened Species. Version 2018-2. Available at: https://www.iucnredlist.org. (Accessed: 15 November 2018).
IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: https://www.iucnredlist.org. (Accessed: 10 December 2019).
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Detailed species account from European Red List of Birds (BirdLife International 2015)
Search for photos and videos, and hear sounds of this species from the Macaulay Library
Recommended citation
BirdLife International (2024) Species factsheet: Caspian Tern Hydroprogne caspia. Downloaded from
https://datazone.birdlife.org/species/factsheet/caspian-tern-hydroprogne-caspia 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.