Great Spotted Cuckoo Clamator glandarius


Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: # _the_WP15.xls#.
Cramp, S. and Simmons, K.E.L. (eds). 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. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions 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
2021 Least Concern
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) 41,100,000 medium
Extent of Occurrence non-breeding (km2) 28,000,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 3000000-10499999 poor suspected 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 - - -

Population justification: The European population is estimated at 84,100-252,000 pairs, which equates to 168,000-505,000 mature individuals (BirdLife International 2015). Europe forms c. 5% of the global range, so a very preliminary estimate of the global population size is 3,360,000-10,100,000 mature individuals, although further validation of this estimate is needed. The population is therefore placed in the band 3,000,000-10,499,999 mature individuals.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats. The European population is estimated to be increasing (BirdLife International 2015).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Algeria N Extant Yes
Angola N Extant Yes
Austria V Extant
Bahrain V Extant Yes
Belgium V Extant
Benin V Extant
Bosnia and Herzegovina V Extant
Botswana N Extant Yes
Bulgaria N Extant Yes
Burkina Faso N Extant Yes
Burundi V Extant
Cameroon N Extant Yes
Central African Republic N Extant Yes
Chad N Extant Yes
Congo V Extant
Congo, The Democratic Republic of the N Extant Yes
Côte d'Ivoire N Extant Yes
Croatia N Extant Yes
Cyprus N Extant Yes
Denmark V Extant
Djibouti V Extant
Egypt N Extant Yes Yes
Equatorial Guinea V Extant
Eritrea N Extant Yes
Eswatini N Extant Yes
Ethiopia N Extant Yes
Finland V Extant
France N Extant Yes
Gabon V Extant
Gambia N Extant Yes
Germany V Extant
Ghana N Extant Yes
Gibraltar (to UK) N Extant Yes
Greece N Extant Yes Yes
Guinea N Extant Yes
Guinea-Bissau N Extant Yes
Iran, Islamic Republic of N Extant Yes
Iraq N Extant Yes
Ireland V Extant
Israel N Extant Yes
Italy N Extant Yes
Jordan N Extant Yes
Kenya N Extant Yes
Kuwait N Extant Yes
Lebanon N Extant Yes Yes
Lesotho N Extant Yes
Liberia N Extant Yes
Libya V Extant
Malawi N Extant Yes
Mali N Extant Yes
Mauritania N Extant Yes
Moldova V Extant
Montenegro N Extant Yes
Morocco N Extant Yes Yes
Mozambique N Extant Yes Yes
Namibia N Extant Yes
Netherlands V Extant
Niger N Extant Yes
Nigeria N Extant Yes
North Macedonia N Extant Yes
Norway V Extant
Oman V Extant Yes
Palestine N Extant Yes
Poland V Extant
Portugal N Extant Yes
Qatar V Extant
Rwanda N Extant Yes
Saudi Arabia N Extant Yes
Senegal N Extant Yes
Serbia N Extant Yes
Seychelles V Extant
Sierra Leone N Extant Yes
Slovenia V Extant
Somalia N Extant Yes
South Africa N Extant Yes
South Sudan N Extant Yes
Spain N Extant Yes
Sudan N Extant Yes
Sweden V Extant
Switzerland V Extant
Syria N Extant Yes
Tanzania N Extant Yes
Togo N Extant Yes
Tunisia N Extant
Turkey N Extant Yes
Turkmenistan V Extant
Uganda N Extant Yes
United Kingdom V Extant
Yemen V Extant Yes
Zambia N Extant Yes Yes
Zimbabwe N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Cyprus Akamas and Agia Aikaterini – Agia Paraskevi Gorges
Greece Axios, Loudias and Aliakmonas rivers' deltas
Greece Dionysades islets, Crete
Greece Kato Olympos, Tempi gorge and mount Ossa
Greece Evros delta
Greece Kalloni Gulf, Lesvos
Greece Mount Beles (Kerkini)
Greece Lake Kerkini
Greece Porto Lagos, lake Vistonida and coastal lagoons
Greece Nestos delta and coastal lagoons
Greece South forest complex of Evros prefecture
Spain Guadalentín saltmarshes
France Etang du Bagnas
France Iles d'Hyères
France Bois de Palayson, du Rouet et de Malvoisin
Italy Diaccia Botrona
France Etangs Montpellierains
France Camargue
France Salines de l'Etang de Berre
France Hautes Corbières
France Basses Corbières
France Massif des Albères
France Gorges du Gardon
France Hautes garrigues du Montpellierais
France Minervois
France Crau
France Plaine des Maures
France Etangs de Citis, Lavalduc, Engrenier, Pourra, l'Estomac, Fos et salines de Rassuen et de Fos
France Basse Ardêche
Iran, Islamic Republic of Lake Zaribar
Iraq Benavi and Sararu
Iraq Amedi and Sulav
Italy Magredi of Pordenone

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Arable Land suitable breeding
Grassland Subtropical/Tropical Dry suitable non-breeding
Grassland Subtropical/Tropical Dry suitable breeding
Savanna Dry major non-breeding
Savanna Dry major breeding
Shrubland Mediterranean-type Shrubby Vegetation suitable non-breeding
Shrubland Mediterranean-type Shrubby Vegetation suitable breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Shrubland Subtropical/Tropical Dry suitable breeding
Altitude 500 - 2000 m Occasional altitudinal limits  

Purpose Primary form used Life stage used Source Scale Level Timing
Sport hunting/specimen collecting - - Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Clamator glandarius. Downloaded from on 11/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 11/08/2022.