Blue Tit

The Blue Tit (Cyanistes caeruleus) is a member of the tit family (Paridae) and is one of the most common and widespread birds in the UK. The male and female Blue Tit are very similar in appearance, both sporting bright yellow underparts, blue wings, a greenish back, and a striking blue cap with a white face. They also have a thin black eye stripe and a black collar. Juveniles are duller with a more yellowish face. The BTO code for the Blue Tit is BT.

Blue Tits are highly adaptable birds found in woodlands (w1/w2), gardens, hedgerows (h2), parks, and other areas with trees and shrubs. They are particularly drawn to areas where they can forage for insects and seeds. Their diet primarily consists of caterpillars, spiders, and other small insects during the breeding season, but they also consume seeds and nuts, especially in winter. Blue Tits are agile feeders, often seen hanging upside down to access food.

Blue Tits nest from April to June. They prefer cavities for nesting, such as holes in trees or nest boxes, which are often lined with moss, feathers, and wool. Clutches typically consist of 8-12 eggs, which are white with reddish-brown speckles. The eggs are incubated by the female for 13-15 days, and the chicks fledge around 18-21 days after hatching. Blue Tits are known for their large broods and high levels of parental care.

The Blue Tit is listed as Green on the Birds of Conservation Concern (BoCC) 5, indicating it is not a species of conservation concern. However, it is still vulnerable to threats such as habitat loss and disease. Like other garden birds, Blue Tits can suffer from diseases spread at poorly maintained feeders and water baths, such as Trichomonosis. They are also at risk from harsh weather conditions, particularly during the winter months when food is scarce. 

As with all bird species in the UK, Blue Tit nests are protected by law during the nesting season. Vegetation clearance during this time should be avoided to protect their nests. Ensuring the preservation and restoration of woodlands, hedgerows, and other suitable habitats will not only benefit Blue Tits but also a wide variety of other species. Providing nest boxes and supplementary feeding, especially in urban and suburban areas, can also support Blue Tit populations. Proper maintenance of feeders and providing clean water can significantly help their survival.