In the United Kingdom, there is a fascinating variety of birds that nest in holes in walls. This behavior, known as cavity nesting, is common amongst several species for whom these nooks and crannies provide a safe and secure environment for their eggs and chicks. These birds in walls are an integral part of the UK’s rich biodiversity.
Among the most common birds that nest in holes in walls are House Sparrows, Starlings, and various species of tits such as Blue Tits and Great Tits. The House Sparrow, for instance, is highly adaptable and often chooses to nest in the crevices of buildings in urban areas. Similarly, Starlings frequently make their homes in wall cavities and under roof tiles. The Blue Tit and the Great Tit are well-known for their propensity to nest in any suitable hole or crevice, including those found in walls.
Nuthatches are another species known to reside within wall cavities. These birds are unique in their ability to plaster the entrance of their nesting hole with mud to deter predators and larger birds. The Swift is another bird that commonly nests in holes in walls, often returning to the same spot year after year to breed.
These cavity-nesting birds contribute significantly to the UK’s urban ecology. However, their numbers have been declining due to habitat loss caused by urban development and renovations that block potential nesting sites. Hence, it is crucial to ensure that these birds continue to have access to suitable nesting sites in our built environment. By understanding and appreciating the behavior of these birds that nest in holes in walls, we can work towards creating a more bird-friendly habitat in our cities and towns.
