New data suggests the number of monarch butterflies in California has grown this year. (westernmonarchcount.org)
Cheryl B. Schultz, Leone M. Brown, Emma Pelton, and Elizabeth E. Crone; Citizen science monitoring demonstrates dramatic declines of monarch butterflies in western North America (xerces.org)
A new study published today in Biological Conservation shows a dramatic decline in the California overwintering population of monarchs in the past three decades. (westernmonarchcount.org)