Half the world's bird species are in decline

One in eight of the world's bird species is threatened with extinction and many more are in decline, according to a new report issued by Birdlife International. Last month in the Hungarian capital Budapest, experts from Europe, Africa and Asia discussed what can be done - including ways to strengthen the African-Eurasian Migratory Waterbird Agreement, first signed in 1999

Migratory birds are finding their habitats are being increasingly lost to human activity Source: Getty / Xinhua News Agency/Xinhua News Agency via Getty Images