Cyanistes caeruleus
The Eurasian Blue Tit, *Cyanistes caeruleus*, is a small, agile passerine renowned for its vibrant plumage and acrobatic foraging style. Measuring approximately 10.5-12 cm (4.1-4.7 inches) in length with a wingspan of 17-20 cm (6.7-7.9 inches) and weighing 7.5-12 grams (0.26-0.42 oz), it features a brilliant cobalt-blue crown, white cheeks framed by a black eye-stripe and chin-stripe, blue-grey upperparts, and bright yellow underparts with a narrow dark stripe down the belly. Distinctive fiel...
This adaptable species thrives in deciduous and mixed woodlands, particularly those with mature oak trees, as well as parks, gardens, and hedgerows. It is found from lowlands up to moderate mountain elevations, typically below 2,000 meters.
Primarily insectivorous during the breeding season, feasting on caterpillars, aphids, and spiders, but shifts to seeds, buds, and fruits in winter, often foraging by gleaning and probing foliage.
Eurasian Blue Tits are highly diurnal, spending their days actively foraging and communicating, often forming small, restless flocks during the non-breeding season. They roost communally or individually in tree cavities or dense foliage, often seeking shelter from cold. Their foraging is incredib...
The Eurasian Blue Tit boasts an extensive and generally stable breeding range that spans across much of temperate and Mediterranean Europe, into parts of western Asia, and extending south to isolated populations in North Africa. This species is largely resident throughout its distribution, exhibi...
Least Concern
- Eurasian Blue Tits were famously observed in the UK learning to peck through the foil caps of milk bottles left on doorsteps to access the cream, demonstrating remarkable problem-solving skills. - They have one of the largest clutch sizes of any bird, sometimes laying up to 16 eggs, though 7-13...