The blue tit (Cyanistes caeruleus) is a small passerine bird widespread in Europe, particularly in gardens, parks and deciduous forests. It is distinguished by its bright plumage, which combines cobalt blue (crown, wings and tail), canary yellow (breast and belly) and white cheeks with a thin black stripe. Its body measures between 10 and 12 cm and weighs between 9 and 14 g. Its small size, thin blue-grey legs and short, straight beak give it a lively and alert appearance. Males and females are very similar in colour, with juveniles displaying more greenish tones on their heads.
The blue tit is renowned for its acrobatics: it can hang upside down from twigs in search of insects, spiders or seeds, depending on the season. Sociable and agile, it is gregarious, sometimes forming mixed groups with other birds in winter to maximise its chances of finding food. It builds its nest in natural or artificial cavities and is usually sedentary, remaining in its environment all year round. An emblematic and protected species, it contributes to the liveliness and biodiversity of European birdlife.
Source: oiseaux.net
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