Monarch butterflies bounce back in Mexico wintering grounds

Monarch butterflies rest on a plant in El Rosario butterfly sanctuary, in Michoacán, Mexico, in January. Photograph: Anadolu Agency/Getty Images

Monarch butterflies rest on a plant in El Rosario butterfly sanctuary, in Michoacán, Mexico, in January. Photograph: Anadolu Agency/Getty Images

source https://www.theguardian.com/environment/2022/may/24/monarch-butterflies-mexico-population-rise