Why migrating species are threatened

The first-of-its-kind report revealed that nearly half of all migratory species are experiencing population decline. 

Migratory species are at risk of disappearing as a result of human encroachment and climate change, a new analysis has found.

In its State of the World’s Migratory Species report published Monday, the first of its kind, the United Nations Convention of Migratory Species of Wild Animals (CMS) revealed that about 22% of the 1,189 CMS-listed migratory species – more than one in five – are threatened with extinction, while 44% of all CMS-listed species are showing population decline.