Eurasian blue tit

The Eurasian blue tit is an active, sociable and inquisitive but territorial species. They form pairs during the mating season in March-April and build their nests in tree bark or even in cracks in walls. The female lays 7 to 12 eggs, which hatch in about two weeks, and the young leave the nest about three weeks after hatching. In general, the Romanian blue tit does not migrate over long distances, but some populations may migrate locally in search of food in winter.

Parus caeruleus

Description and how to observe Eurasian blue tit:

The Eurasian blue tit is a small bird, recognisable by its brightly coloured plumage: blue on the head, wings and tail, a deep yellow on the breast and abdomen, and a distinctive black band on the forehead and nape. In the Danube Delta, this species can easily be spotted in wooded areas, along canals and near farmland. Observers can identify the blue tit by its melodious song and constant activity, as it often leaps from branch to branch in search of food.

What it feeds on Eurasian blue tit:

The Eurasian blue tit's diet is varied, consisting largely of insects, spiders, insect larvae and eggs, which it finds in the bark of trees or on their leaves. In the cold season, its diet expands to include seeds, fruits and nuts. This adaptability allows it to survive in different climatic and environmental conditions.

Threats:

Although the Eurasian blue tit is not considered an endangered species, its habitat is affected by deforestation, pollution and human activities that reduce foraging and nesting areas. In the Danube Delta, the use of pesticides and the loss of old trees or trees with bark are the main threats to the species.

Ecological role:

The blue tit plays an essential role in the Danube Delta ecosystem. As an insect predator, it helps to control pest populations, thus maintaining the natural balance and health of forests. Also, through its feeding and foraging activities, it helps to disperse seeds, promoting vegetation regeneration.

More information about Parus caeruleus:

Thanks to its eye-catching colours and curious behaviour, the blue magpie is often the subject of birdwatching programmes in the Danube Delta and a favourite of nature photographers. The species adapts relatively easily to human presence, so can also be seen in gardens and parks near the delta area.