ECOWATCH: Migratory monarch butterfly: going, going … gone?

Like so many species on this list, which have been on this planet for eons, the endangered migratory monarch butterfly (Danaus plexippus) has an ancestry that dates back about two million years. Now this species is threatened by habitat destruction, increased use of herbicides and pesticides in homes and commercial agricultural sites, illegal logging of the forests where they spend the winters, and by other factors during their migration to and from wintering sites.