BirdLife International. 2004. Birds in Europe: population estimates, trends and conservation status. BirdLife International, Cambridge, U.K.
BirdLife International. 2015. European Red List of Birds. Office for Official Publications of the European Communities, Luxembourg.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-3. Available at: https://www.iucnredlist.org. (Accessed: 5 December 2017).
IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: https://www.iucnredlist.org. (Accessed: 10 December 2019).
Madroño, A.; González, C.; Atienza, J.C. 2004. Libro Rojo de las aves de España. Sociedad Española de Ornitología, Madrid.
Ottosson, U.; Bensch, S.; Svensson, L.; Waldenström, J. 2005. Differentiation and phylogeny of the olivaceous warbler Hippolais pallida species complex. Journal of Ornithology 146: 127-136.
Svensson, L. and Christie, D.A. 2013. Isabelline Warbler (Hippolais opaca). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. and de Juana, E. (eds), Handbook of the Birds of the World Alive, Lynx Edicions, Barcelona.
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: Western Olivaceous Warbler Iduna opaca. Downloaded from
https://datazone.birdlife.org/species/factsheet/western-olivaceous-warbler-iduna-opaca on 22/12/2024.
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 22/12/2024.