What happens when a forest loses its birdsong? Following clues hidden in the sounds birds make while asleep , Argentinian physicist Gabriel Mindlin uncovers a hidden extinction – not of species, but of memory – and sets out to revive vanished melodies before they disappear forever. Part detecti...

Source: [Guardian International](https://www.theguardian.com/environment/ng-interactive/2026/oct/13/dream-of-birds-documentary)

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