They came a long way from sub-Saharan Africa to eastern France—but now the Egyptian geese are quite at home there and are chasing out local ducks and swans, just one symptom of the world’s biodiversity crisis. They came a long way from sub-Saharan Africa to eastern France—but now the Egyptian geese are quite at home there and are chasing out local ducks and swans, just one symptom of the world’s biodiversity crisis. Ecology Phys.org – latest science and technology news stories