Ficedula hypoleuca
Ficedula hypoleuca
This is a species with a western Palearctic distribution, extending from the Atlantic to Central Asia (BirdLife International, 2024). It is also common in Europe during the breeding season and pre- and post-nuptial migration (Keller et al., 2020). In Spain, breeding populations occur in the supra- and oromediterranean belts (800–2,000 m altitude), mainly in the mountain ranges surrounding the northern plateau and northern Iberian Peninsula (Gordo in SEO/BirdLife, 2022). In the Balearic and Canary Islands, as well as in Ceuta and Melilla, it occurs only during migration.
In the Community of Madrid, breeding populations are found in the mountainous strip of the Central System, with some isolated populations in the central and southwestern areas. Records elsewhere may correspond to birds in passage, as this species undertakes very early migratory movements (Díaz et al., 1994; Gargallo et al., 2011).
Within the national park, most observations during the fieldwork for this atlas in the breeding season were obtained in mature Scots pine forests in the southwest, around the municipality of Cercedilla, along the forested slopes of the Sierra, and in the Fuenfría Valley near Puerto de Fuenfría. Additionally, it appears at only four isolated points in the Lozoya Valley.

It is a forest species that occupies humid, mature woodlands where it can find cavities and hollows for nesting. In Spain, it prefers oak and holm oak forests, although it also occurs in Scots pine forests, beechwoods, and chestnut groves. It also uses other wooded habitats, but to a lesser extent (Morales, 2016).
In the national park, its highest densities are found in mature Scots pine forests in the southwest of the protected area.

At a global scale it is considered a Least Concern species (LC; 2018). In Europe it would also be classified in the same category (LC; 2021). In Spain it is listed as Near Threatened in the 2021 Red List.
The Catalogue of Threatened Species of the Community of Madrid (1992) does not place the species in any threat category.
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.
Gargallo, G., Barriocanal, C., Castany, J., Clarabuch, O., Escandell, R., López-Iborra, G., Rguibi-Idrissi, H., Robson, D. y Suárez, M. 2011. Spring migration in the western Mediterranean and NW Africa: the results of 16 years of the Piccole Isole project. Monografies del Museu de Ciències Naturals, 6: 1-364.
Morales, J. 2016. Papamoscas cerrojillo–Ficedula hypoleuca. En Salvador, A. y Morales, M. B. (eds.): Enciclopedia Virtual de los Vertebrados Españoles. Museo Nacional de Ciencias Naturales. Madrid.
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.