Saving critical winter habitat for monarch butterflies may depend on buy

The monarch butterfly (Danaus plexippus) population has plummeted by 80% to 95% since the 1990s, depending on the region and monitoring method. A major cause of the species’ decline is deforestation in central Mexico, where eastern monarchs spend the colder winter months of their annual migration from Canada and the northern United States. Since 1980, the Mexican government has worked to conserve critical winter monarch habitat by cracking down on logging, one of the leading causes of habitat degradation. They ultimately designated 563 square kilometers (217 square miles) of forest as the Monarch Butterfly Biosphere Reserve, banning logging, hunting, and foraging in certain locations and restricting it in others. Mountains in central/southern Mexico. Photo by José López-García The project