Two thousand species of birds, 20% of all known species, make regular seasonal movements. Many travel thousands of miles between their breeding places and their wintering grounds. More than 40% of these migratory species are declining, and nearly 200 are now classified as globally threatened.
Migratory birds are being hit hard when they are most vulnerable. After very long journeys they face countless dangers. These may include the destruction and degradation of natural habitats, the loss of critical stopover sites such as coastal wetlands, illegal killing, poisoning, pollution, and collisions with badly-sited infrastructure such as power lines and wind turbines.