Balearic Warbler (Curruca balearica) | Details

Balearic Warbler Curruca balearica

Current view: Data table and detailed info

Taxonomy

Taxonomic note

Sylvia sarda and S. balearica (del Hoyo and Collar 2016) were previously lumped as S. sarda following Cramp et al. (1977-1994) and Sibley and Monroe (1990, 1993).
Previously placed in Sylvia but moved to current genus following Cai et al. (2019). Formerly treated as a subspecies of C. sarda, but differs in its paler throat (1); paler belly and flanks (1); smaller size (effect size for wing based on published data (Shirihai et al. 2001) –3.5, score 2); somewhat different song (to which the other species does not respond; allow 2); clearly different contact calls (at least 2); and migratory pattern (1). Monotypic.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2021. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

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

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	13,000 km²
Extent of Occurrence (non-breeding)	210,000 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	29500-52600 mature individuals	medium	estimated	2018
Population trend	stable	-	suspected	-
Generation length	2.32 years	-	-	-

Population justification: This species breeds only in Europe, where the total population size is estimated at 28,000-50,000 mature individuals, with 14,000-25,000 breeding pairs (BirdLife International 2021). The population is considered to have remained relatively stable over three generations (10 years) (BirdLife International 2021).

Trend justification: .

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Spain	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Spain	Archipelago of Cabrera
Spain	Cala Salada - Illa d'en Calders
Spain	Cape Barbaria
Spain	Cape Pinar
Spain	Coastal cliffs between Cape Enderrocat and Cala Pí
Spain	La Mola of Formentera
Spain	Salobrar de Campos Lagoons-Sa Vall
Spain	Salt-pans of Ibiza and Formentera and Freus isles
Spain	Tramuntana mountains

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Temperate	suitable	resident
Grassland	Temperate	suitable	resident
Shrubland	Mediterranean-type Shrubby Vegetation	major	resident
Altitude	0 - 1200 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Balearic Warbler Curruca balearica. Downloaded from https://datazone.birdlife.org/species/factsheet/balearic-warbler-curruca-balearica 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.