Periparus ater
Periparus ater
This species has a wide distribution throughout the temperate and boreal regions of the Palearctic (BirdLife International, 2024). In Europe it is widespread, including the Mediterranean region, and is absent only from the extensive agricultural and steppe areas in the eastern part of the continent (Keller et al., 2020). In Spain it is very widely distributed across the peninsula, but is absent from the Balearic and Canary archipelagos, as well as from Ceuta and Melilla (Romay and Justo in SEO/BirdLife, 2022). In the Eurosiberian region it is a common species, while in the Mediterranean region it mainly occupies forest ecosystems of mountainous areas. It is absent from depressions and agricultural plains in the northern plateau and the Ebro valley, as well as in parts of Extremadura and Andalusia (Purroy et al. in Martí and Del Moral, 2003).
In Madrid it is restricted to coniferous forests, showing a preference for subalpine Scots pine woodlands. It extends into lower areas, reaching even the city of Madrid and certain areas in the east and south of the region (Díaz et al., 1994).
In the Sierra de Guadarrama National Park it is one of the most abundant species. The extensive Scots pine forests within the park make this species one of the most numerous, being present across almost its entire area except in the treeless summit zones and rocky outcrops with little arboreal cover.

The coal tit inhabits coniferous forests of temperate and cool regions (Polo, 2016). It is also common in montane deciduous woodlands such as beech, birch and fir forests. Beech and oak stands can hold high densities, but the highest densities occur in pine and fir forests of the Mediterranean and Pyrenean zones, although the species shows a broad ecological tolerance (Carrascal and Palomino, 2008).
The highest densities are found in well-forested areas, while it is absent from high-altitude shrublands and open summit zones. It is also missing from rocky outcrops and areas with insufficient tree cover, as the species requires mature forest with several vertical strata.

At a global scale, the species is considered to be of Least Concern (LC; 2024). In Europe, it would also be classified in the same category (LC; 2021). 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.
Brotons, L., Magrans, M., Ferrus, L. y Nadal, J. 1998. Direct and indirect effects of pollution on the foraging behaviour of forest passerines during the breeding season. Canadian Journal of Zoology, 76: 556-565.
Carrascal, L. M. y Palomino, D. 2008. Las aves comunes reproductoras de España. Población en 2004-2006. SEO/BirdLife. Madrid.
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.
Martí, R. y Del Moral, J. C. (eds.). 2003. Atlas de las aves reproductoras de España. SEO/BirdLife-Ministerio de Medio Ambiente. 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.