Partnering to conserve the monarch butterfly migration

News: Population Trends

A 10,000 Foot View of Monarch Conservation

Monarch conservation has a rich history of science, discovery, and partnerships that has led us to today. As monarchs continue to face complex challenges in our changing landscape, it is important to understand where we’ve been and where we are headed.  Read More »

Eastern Monarch Overwintering Population Numbers Announced

The monitoring report of the forest area occupied by monarch butterflies in 2017-2018, carried out by WWF and CONANP, registered 2.48 hectares of occupied forests, an area that represents a decrease of 14.77 percent from last year.  Read More »

Western Monarch Butterflies Continue to Decline

Annual census of monarchs overwintering on the California coast reveals the lowest number of butterflies in recent years.  Read More »

Estimating the Number of Overwintering Monarchs in Mexico

Every year we anxiously await news of the monarch overwintering population count from Mexico. When are they done and how are the monarchs counted?  Read More »

Measuring Monarchs and Milkweed

Monarch population size estimates allow us to assess the status of the population, and set goals for restoring it to a sustainable level. Monarchs’ declining numbers have gained a lot of attention, but how is the monarch population measured anyway?  Read More »