The Silent Migration: What Happens When the Birds Stop Coming?
Every spring, millions of birds return to Europe from Africa. But increasingly, fewer are making the journey. What is happening to our migratory birds and what does their decline tell us about the health of the planet? There is something extraordinary about migration. A bird weighing little more than a few grams leaves Africa, crosses the Sahara, navigates the Mediterranean, crosses Europe and eventually arrives at a small patch of woodland, reedbed, heathland or farmland in Britain. Some will have travelled thousands of miles. Some will return to precisely the same place where they were born. And then, as autumn approaches, they turn around and do it all again. For generations, we have regarded this as one of nature's great constants. But it isn't constant anymore. In many parts of the world, the migration is becoming quieter. And the birds are telling us something important. The birds are telling us something Birds are amongst the most useful indicators we have of environment...