The situation of migratory species is deteriorating around the world, warns a new report. “Migratory species are being hit hard,” laments UN Environment boss Inger Andersen.
Among the species listed by the 1979 Bonn Convention on the Conservation of Migratory Species of Wild Animals, one in five is threatened with extinction. The report calls for international cooperation to help animals which, by nature, know no borders and can sometimes cross thousands of kilometers. Like the monarch butterfly, which can travel 4,000 km in North America, these species provide many services such as pollination.