What migratory species are most at risk?
Some species lead such secretive lives that not enough can always be done to improve their conservation status. This is the case of the Slender-billed Curlew, the breeding grounds of which are still unknown, so few effective measures can be taken to protect those species during the breeding season. It is a similar case with marine turtles and some of the marine mammals, the life habits of which are only poorly known. Also particularly at risk are those species subject to unsustainable exploitation and those with small populations.
