Eurasian blue tit

Parus caeruleus EM1B1832 (40967518404)

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Eurasian Blue Tit ebird data map

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Blue tit displaying aggresion during ringing

Cyanistes caeruleus -Norfolk, England -adult feeding chick-8

Cyanistes caeruleus ultramarinus (Bonaparte, 1841) 323 Aïn-Chénia, El Aouinet Algérie

Eurasian Blue Tit (Cyanistes caeruleus), formerly known as the Parus caeruleus, is a small passerine bird in the tit family Paridae. It is easily recognizable by its blue and yellow plumage and small size.

Description

The Eurasian Blue Tit is a small bird, measuring 10.5–12 cm in length and weighing 9–14 g. The bird is characterized by its bright blue cap, white face, dark line through the eyes, and greenish back. Males and females are similar in appearance, but males may have brighter blue in their plumage. Juveniles are more yellowish than adults.

Habitat and Distribution

Eurasian Blue Tits are widespread across Europe and parts of western Asia. They inhabit a variety of environments, including deciduous and mixed forests, gardens, and parks. These birds are largely resident throughout their range, though some northern populations migrate southwards in winter.

Behaviour

Feeding

Eurasian Blue Tits are omnivores, feeding on a diet of insects, spiders, and seeds. They are adept at foraging in trees, often hanging upside down to reach their food. In winter, they are known to visit bird feeders, showing a particular preference for peanuts and sunflower seeds.

Breeding

The breeding season begins in late March, with nests constructed in tree holes, walls, or even in man-made nest boxes. The female lays 7–12 eggs, which she incubates alone for about 13–15 days. Both parents feed the chicks, which fledge approximately 18–21 days after hatching.

Conservation Status

The Eurasian Blue Tit is classified as Least Concern by the International Union for Conservation of Nature (IUCN). The species benefits from human-provided nest boxes in some areas, helping to boost local populations.

Cultural Significance

In addition to its ecological role, the Eurasian Blue Tit has featured in European folklore and art, symbolizing happiness and curiosity.