Agence France-Presse: Europe has an estimated 421 million fewer birds than three decades ago, and current treatment of the environment is unsustainable for many common species, a study released on Monday said.
The population crash is related to modern farming methods and the loss and damage of habitats, according to the study published in science journal Ecology Letters.
"This is a warning from birds throughout Europe. It is clear that the way we are managing the environment is unsustainable for many of our most...