Olive-tree Warbler Hippolais olivetorum


Taxonomic note

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: # _the_WP15.xls#.
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: # _the_WP15.xls#.
Cramp, S. and Perrins, C.M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
Cramp, S.; Perrins, C. M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
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 Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency does not normally occur in forest
Land mass type Average mass -

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,510,000
Extent of Occurrence non-breeding (km2) 3,800,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 23000-55999 poor estimated 2012
Population trend stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 4 - - -

Population justification: In Europe (which covers c.90% of the breeding range), the breeding population is estimated to be 10,800-25,000 pairs, which equates to 21,500-50,100 mature individuals (BirdLife International 2015). So a very preliminary estimate of the global population size is 23,800-55,600 mature individuals, although further validation of this estimate is needed.

Trend justification: In Europe the population size is estimated to be stable (BirdLife International 2015).

Country/territory distribution
Country/Territory Presence Origin Resident Breeding Non-breeding Passage
Albania extant native yes
Algeria extant vagrant
Bosnia and Herzegovina extant native yes
Botswana extant native
Bulgaria extant native yes
Cameroon extant vagrant
Croatia extant native yes
Cyprus extant native
Czechia extant native
Djibouti extant vagrant
Egypt extant native
Eritrea extant vagrant
Ethiopia extant native
Germany extant vagrant
Greece extant native yes yes
Israel extant native
Italy extant vagrant
Jordan extant native yes
Kenya extant native
Kuwait extant native yes
Lebanon extant native yes yes
Malawi extant native
Montenegro extant native yes
Niger extant vagrant
Nigeria extant vagrant
North Macedonia extant native yes
Oman extant vagrant yes
Palestine extant native yes
Romania extant vagrant
Saudi Arabia extant native yes
Serbia extant native yes
Somalia extant vagrant
South Africa extant native
Spain extant vagrant
Sudan extant native yes
Syria extant native yes yes
Tanzania extant native
Turkey extant native yes
Ukraine extant vagrant
Yemen extant native yes
Zambia extant native
Zimbabwe extant native

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Bulgaria Arda Bridge
Bulgaria Bakarlaka
Bulgaria Byala Reka
Bulgaria Derventski Heights
Bulgaria Emine
Bulgaria Harmanliyska Reka
Bulgaria Kresna Gorge
Bulgaria Krumovitza
Bulgaria Madzharovo
Bulgaria Melnik Pyramids
Bulgaria Mesta Valley
Bulgaria Sakar
Bulgaria Strandzha
Bulgaria Studen Kladenets
Bulgaria Western Strandzha
Croatia Krka and Surrounding Plateau
Croatia Middle Dalmatian Islands and Peljesac Penninsula
Croatia Mount Mosor, Kozjak and Trogir Hinterland
Croatia Ravni Kotari
Greece Acherontas gorge and estuary
Greece Akarnanika mountains
Greece Apsalos and Moglenitsa gorges
Greece Asvestades - Vrysika area
Greece Dadia - Dereio - Aisymi forest
Greece East Lakonia mountains
Greece Kalogria lagoon, Strofylia forest and Lamia marshes
Greece Lake Dystos
Greece Mount Mavrovouni, Larisa
Greece National Park of Dadia - Lefkimi - Soufli forest
Greece South forest complex of Evros prefecture
Greece Zakynthos island
Lebanon Shouf Cedars Nature Reserve
North Macedonia Gradsko-Rosoman-Negotino
North Macedonia River Pchinja-river Petroshnica-river Kriva Reka
North Macedonia River Topolka-river Babuna-river Bregalnica
North Macedonia Tikvesh Region
Syria Umm al-Tuyyur
Turkey Alaçatı
Turkey Amanos Mountains
Turkey Bey Mountains
Turkey Bodrum Peninsula
Turkey Bolkar Mountains
Turkey Datça and Bozburun Peninsula
Turkey Dilek Peninsula
Turkey Güllük Mountain
Turkey Karaburun and İldir Strait Islands
Turkey Kizildag Izmir
Turkey Köprüçay Valley
Turkey Mardin Threshold
Turkey Tahtalı Mountains

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable breeding
Savanna Dry suitable non-breeding
Savanna Dry suitable breeding
Shrubland Mediterranean-type Shrubby Vegetation suitable breeding
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2023) Species factsheet: Hippolais olivetorum. Downloaded from on 07/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 07/06/2023.