20% of migrants at risk of extinction, especially fish - Nature.com. The cause lies in particular in the reduction of habitats due to human exploitation and climate change as well as indiscriminate trapping.
Almost half of the key areas of the 1,200 migratory species present in the report have significantly reduced. Many species are hunted excessively, as happened for example to eels. The report underlines the importance of common international policies, in particular protecting their habitats and reducing their capture for commercial purposes.