Migratory birds make incredible journeys every year, but habitat loss, pollution and climate change are pushing many into decline. This #WorldMigratoryBirdDay#, meet the cities becoming safe havens:

Each year, more than two million birds find refuge in Banc d’Arguin National Park in Mauritania. With its sand dunes, shallow waters and islands, this @UNESCO #WorldHeritage# site provides vital feeding and resting grounds along their journeys across continents. As we mark #WorldMigratoryBirdDay#, find out more about this unique site and why protecting the places migratory birds depend on along the way matters. @PNBancarguin

What if a single bird could tell us the health of an entire ecosystem? In Botswana, the Slaty Egret is a key indicator species for the Okavango Delta. This #WorldMigratoryBirdDay#, watch how migratory birds connect ecosystems across continents. @WMBD @BonnConvention @IUCN @EU_Commission @EU_ENV