Sylvia atricapilla
Sylvia atricapilla
This species extends across much of the Western Palearctic (BirdLife International, 2024), being absent in Europe only in the northernmost areas of Fennoscandia (Keller et al., 2020). In Spain it is a species with Eurosiberian preference (Tellería et al., 1999), widely distributed throughout the northern half of the peninsula, but its distribution becomes more fragmented toward the south, where it appears more localized. It is absent from the arid areas of the southeastern peninsula and the large treeless expanses of the Guadalquivir valley, Extremadura, the Ebro valley, and both plateaus. It is also present in the Canary Islands and the Balearic Islands but absent from Melilla (Pérez-Tris and Remacha in SEO/BirdLife, 2022).
In Madrid it is widely distributed, occupying the entire northwestern half, while in the southeastern half it appears linked to river courses. It inhabits parks and urban gardens. It is mainly associated with forests such as ash groves, Pyrenean oak woods, or mountain pine forests, but also with riverine forests and juniper stands (Díaz et al., 1994).
In the Sierra de Guadarrama National Park, it is especially abundant in areas with greater forest cover, whether Scots pine forests, Pyrenean oak woods, or mixed formations, including the Lozoya valley, the San Blas basin, La Barranca pine forests, the Navalmedio valley, and the pine forests around the Morcuera pass and El Purgatorio.

This species prefers wooded habitats with a certain degree of humidity, such as riparian forests, oak woods, beech forests, or pine forests, where there is some understory cover (Tellería and Santos, 1994; Carbonel et al., 2003; Holt et al., 2013; Pérez-Tris and Remacha in SEO/BirdLife, 2022). It is also common in urban and agricultural areas with shrub cover.
In the national park, its highest densities occur in forested areas, whether pine forests, Pyrenean oak woods, or other mixed formations.

At a global scale, it is considered a species of Least Concern (LC; 2016). In Europe, it is also classified in the same category (LC; 2020). In Spain, it is listed as Least Concern in the 2021 Red List.
The Catalogue of Threatened Species of the Community of Madrid (1992) does not include this species in any threat category.
BirdLife International 2024. IUCN Red List for birds. https://datazone.birdlife.org.
Carbonell, R., Pérez-Tris, J. y Tellería, J. L. 2003. Effects of habitat heterogeneity and local adaptation on the body condition of a forest passerine at the edge of its distribitional range. Biological Journal of the Linnean Society, 78: 479-488.
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.
Holt, C.A., Fuller, R.J. y Dolman, P.M. 2013. Deer reduces habitat quality for a woodland songbird: Evidence from settlement patterns, demographic parameters, and body condition. Auk, 130: 13-20.
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. y Santos, T. 1994. Factors involved in the distribution of forest birds in the Iberian Peninsula. Bird Study, 41: 161-169.