The Willow Warbler (Phylloscopus trochilus) is a small, migratory bird species that visits the UK during the summer months, known for its sweet and melodious song that fills the woodlands and countryside. These delightful warblers are members of the leaf warbler family and play an important role in the UK’s avian biodiversity.

Willow Warblers primarily feed on a diet of insects, including flies, caterpillars, and spiders, which they glean from foliage and branches in woodlands, hedgerows, and scrublands. Their slender bills and agile foraging behaviour enable them to capture prey efficiently while flitting among the leaves.

Their preferred habitats include deciduous and mixed woodlands, particularly those with dense undergrowth and a variety of tree species. Willow Warblers are often found in areas with plenty of shrubs and bushes for nesting and foraging, as well as near water sources such as rivers and streams.

Behaviourally, Willow Warblers are highly territorial during the breeding season, with males performing elaborate song displays to attract mates and establish territories. They are often seen darting among the branches and foliage, searching for insects and singing their melodious tunes.

The average lifespan of a Willow Warbler is around 2 to 3 years, although some individuals may live longer under favourable conditions.

In cultural references, Willow Warblers are celebrated for their beautiful song, which has inspired poets and nature lovers throughout history. They symbolise the arrival of spring and the renewal of life in the British countryside, with their melodic calls heralding the changing of seasons. For example, the poet John Clare wrote fondly about the Willow Warbler’s song in his works, capturing the essence of its cheerful melody.