Où sont passés nos oiseaux ?

Why have sparrows vanished from our cities? Why are they dwindling in the countryside—40 % of field birds have disappeared in 25 years? To save them, we must first understand why. Hugo Clément investigates threats to French birds. Some are obvious (hunting, habitat loss); others are surprising. Fortunately, people everywhere are working on solutions to protect birds.

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S03E10 - Plus économiques, plus écolos : comment transformer nos maisons ?