Once a thriving and common feature of our woodlands, the willow tit is now the UK's fastest declining resident bird.

According to Severn Trent Water, numbers have fallen by about 96% from 1967 to 2023, with only around 3,400 breeding pairs left across the whole country.

Approximately 10 of those are believed to nest in the grounds of Tittesworth Reservoir, near Leek in Staffordshire.