The world’s most vulnerable migratory species face an increasing risk of extinction, a landmark UN report has warned.

From turtle doves to green turtles, from the European eel to the African penguin, migratory species are the great explorers of the animal kingdom.

They play an essential role in protecting the Earth’s habitats by transferring nutrients, pollinating and maintaining woodlands.

But decades of exploitation has left “species on the edge of extinction”.

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