Mexico’s monarch butterfly population jumps 64%, offering hope for at-risk species

The insects covered its largest area since 2018, despite threats from habitat loss, climate crisis and pesticides The population of monarch butterflies in Mexico increased 64% this winter, compared with the same period in 2025, offering a glimmer of hope for an insect considered at risk of extinction. The figures, released this week by the World Wildlife Fund (WWF) Mexico, showed that the area occ