On Wren Day, "Wren Boys" in Ireland meet to parade, often with a holly bush with wrens, and sing the Wren Song. The boys make straw costumes to wear, and their leader's costume depicts a horse known as the "hobby horse". The song is sung in particular when they parade around a real or fake wren and ask for money and donations.
Lyrics
There are many versions of the Wren Song, but one of the most common goes as follows: