Pelicans silhouetted by a setting sun fly along the California coastline in November 2013. Photo: Reuters

Where have the wild birds gone? North American populations fell by 3 billion since 1970

  • Scientists concerned as new study shows 29 per cent drop in numbers over past five decades
  • Habitat loss a major factor, though cats, cars, pesticides and collisions with windows also contribute
Topic |   Animals

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Pelicans silhouetted by a setting sun fly along the California coastline in November 2013. Photo: Reuters
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