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Coal Tits are known for their acrobatic skills and restless activity. They often form small flocks with other tits during winter. Their foraging behavior is influenced by risk, and they are known to increase body mass in response to predator calls and adjust their mass gain based on food availability.
The Coal Tit's calls are short "dee" or "see-see" sounds, while its song is a strident "if-he, if-he, if-he," which is most frequently heard from January to June and in autumn. The song is similar to that of the Great Tit but is much faster and higher in pitch.
Nesting sites are varied, including holes in rotting tree stumps, ground burrows, and old nests of other large birds. The nest is made of moss, hair, and grass, with a lining of rabbit fur or feathers. The Coal Tit typically lays seven to eleven red-spotted white eggs, mainly in May, and usually breeds once per year.
The Coal Tit can be confused with other tit species, but its distinctive white nape spot and black head are key differentiators.
The diet consists of beechmast, seeds from fir and larch cones, and seeds from alders and birches. They also visit gardens to feed on sunflower seeds and other offerings.
