Monarch Joint Venture Blog
New Research Indicates Eastern Monarch Population at Risk of Extinction
A new study by reveals there is a substantial probability of “quasi-extinction” of the Eastern monarch butterfly migratory population within 20 years if ambitious habitat restoration and conservation goals are not achieved. Read More
Population Numbers for Eastern Monarchs Increase During 2015-16 Season
The 2015-16 overwintering population estimate has been released at 4.01 hectares. This year's population is more than 3 times larger than last year's! This is exciting news, but there is still much work to be done to restore a resilient monarch population. Read More
Western Monarch Overwintering Population Counts Released
The results of the western monarch overwintering population count have been released! Read More
Counting Western Monarchs
Candy Sarikonda, Monarch Watch Conservation Specialist, writes about her experience monitoring western monarchs at the Pacific Grove Monarch Butterfly Sanctuary. Find out what it's like to count monarchs and learn how you can get involved today! Read More
2015 Population Update and Estimating the Number of Overwintering Monarchs in Mexico
The 2015 overwintering population was estimated, occupying 1.13 hectares across 9 sites in Mexico. Read more about how these numbers are estimated. Read More