The eastern population of monarchs has declined over 80 percent and the western population is nearly extinct, with just 3 percent of its population remaining https://on.natgeo.com/2XuaOfI

The eastern population of monarchs has declined over 80 percent and the western population is nearly extinct, with just 3 percent of its population remaining https://on.natgeo.com/2XuaOfI 

https://twitter.com/NatGeoTravel/status/1142296265033682945