Mexican Overwintering Monarchs Graph


This graph shows the area of forest occupied by colonies of hibernating monarchs in Mexico from 1994-2016 (Graph courtesy of Ernest Williams). In late January 2015, the World Wildlife Fund in Mexico reported that the size of the 2014–2015 overwintering population is the second smallest since monitoring began in 1994, occupying an estimated area of just 1.13 hectares (2.79 acres) (Secretariat of Environment and Natural Resources, Mexico 2015).


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Program Features
Program Highlights
  • • The Xerces Society has awarded two $3,750 Joan M. DeWind awards for research into lepidoptera conservation
  • Butterfly-a-thon pledges raise $30 per species that Bob Pyle observes for butterfly conservation work
Additional Information
monarch butterfly (Danaus plexippus) on milkweed (Asclepias sp.) by Doug Tallamy


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