Dartford Warbler

Curruca undata

More information on other websites:

Dartford Warbler

Curruca undata

More information on other websites:

Distribution

This species is restricted to the European continent and northwest Africa (Keller et al., 2020; BirdLife International, 2024). At the national scale, it occurs in the Iberian Peninsula and the western Mediterranean islands, with some scattered populations in Great Britain, France, and Italy. It avoids deforested areas and sites without vegetation cover; therefore, in Spain it is absent from the plateaus, the Ebro and Guadalquivir valleys, and also avoids dehesas and steppes in Extremadura (Justo and Romay in SEO/BirdLife, 2022).

In Madrid, it is an abundant species due to the large extent of shrubland habitats. It occupies the piedmont areas of the mountains, mountain shrublands up to 2,000 m a.s.l., and the shrubland areas of the southeast. Its highest densities occur in rockrose and kermes oak scrub, and to a lesser extent in juniper and thermophilous pine forests (Díaz et al., 1994).

Within the national park, it is typical of the rockrose scrub in the southern area, on the slopes of Pico de la Maliciosa and Sierra de los Porrones; it also occupies the upper parts of the densest mountain heaths in the Cuerda Larga, being more abundant in the northern zone between Pico del Nevero and Peña Cabra.

Habitat

This species is adapted to all bioclimatic belts but is uncommon in the alpine belt. It is always associated with shrubland habitats such as broom scrub, heaths, rockrose, juniper, holm oak, or retama shrublands (Tellería et al., 1999).

Within the national park, its highest densities occur in areas with sparse vegetation and open shrublands. It occupies zones from the lowest southern areas up to the higher slopes, always in shrub-dominated habitats with rockrose, juniper, or heath (piornal) vegetation.

Conservation status

At the global scale, this species is classified as Near Threatened (NT; 2022). In Europe, it is also classified as Near Threatened (NT; 2020). In Spain, it is considered Vulnerable on the 2021 Red List.

The Catalog of Threatened Species of the Community of Madrid (1992) does not list this species under any threat category.

Bibliography

BirdLife International 2024. IUCN Red List for birds. https://datazone.birdlife.org.

Díaz, M., Martí, R., Gómez-Manzaneque, Á. y Sánchez, A. 1994. Atlas de las aves nidificantes en Madrid. Agencia de Medio Ambiente y SEO/BirdLife. Madrid.

Keller, V., Herrando, S., Voříšek, P., Franch, M., Kipson, M., Milanesi, P., Martí, D., Antón, M., Klvaňová, A., Kalyakin, M. V. Bauer, H. Gr y Foppen, R. P. B. 2020. European Breeding Bird Atlas 2: Distribution, Abundance and Change. European Birds Census Council y Lynx Edicions. Barcelona.

Regos, A., D’Amen, M., Herrando, S., Guisan, A. y Brotons, L. 2015. Fire management, climate change and their interacting effects on birds in complex Mediterranean landscapes: dynamic distribution modelling of an early-successional species—the near-threatened Dartford Warbler (Sylvia undata). Journal of Ornithology, 156: 275-286.

SEO/BirdLife (Molina, B., Nebreda, A., Muñoz, A. R., Seoane, J., Real, R., Bustamante, J. y Del Moral, J. C., eds.) 2022. III Atlas de las aves en época de reproducción en España. SEO/BirdLife. Madrid.

Tellería, J. L., Asensio, B. y Díaz, M. 1999. Aves Ibéricas. II. Paseriformes. J.M. Reyero Editor. Madrid.