Listen to Britain’s dawn chorus of 1976: the dramatic loss of birdsong in 50 years

Human intervention has dramatically reduced habitats for wild birds in Britain and with it the plenitude, volume and variety of birdsong. Illustration: Anaïs Mims/Getty

Imagine a deafening abundance of birdsong so loud it wakes your children at dawn; the chirrup of house sparrows, the chattering of starlings, the melody of the wren, and the clear high-pitched flute of blackbirds saturating the garden, reverberating around your local park, dominating your neighbourhood from early morning to evening twilight.

So loud is the song of the thrush that the naturalist and ornithologist WH Hudson wrote in 1919 that he was grateful when observing one that it was perched on a tree at a distance from his home, “so that when I woke at half past three or four o’clock, the shrill indefatigable voice came in at the open window, softened by distance and washed by the dewy atmosphere to greater purity”.