France, March 23 -- Cop15 brings together governments to protect animals that move across borders and oceans.

The latest State of the World's Migratory Species report - first published in 2024 and updated ahead of this summit - found that 49 percent of migratory species populations are now in decline, up from 44 percent two years earlier.

Around 24 percent face extinction globally. 

Many of these animals travel long distances to find food or places to reproduce. Like humans, they move to find better living conditions, with food as the main driver.

One of the most striking examples takes place off southern Africa. A bloom of plankton attracts billions of sardines, which form huge shoals stretching for kilometres.

These shoals dra...