Monarch Joint Venture Blog
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Eastern Monarch Butterfly Population Falls to Less than One Hectare in the 2023-2024 Overwintering Season
Categories
- Migration
- Population Trends
- Recent Research
- Important Monarch News
Monarch butterflies occupied 0.9 hectares, 1.31 less than the 2.21 hectares in the 2022-2023 overwintering season. This is the first time since the 2013-2014 overwintering season that the eastern monarch population has occupied less than one hectare. Read More
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Western Monarch Count Declines
Categories
- Community Science
- MJV Partnership News
- Population Trends
- Important Monarch News
Over 400 volunteers surveyed 256 overwintering sites this winter, tallying a total of 233,394 monarch butterflies across the western overwintering sites. Read More
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IUCN Changes Migratory Monarch Status from Endangered to Vulnerable
Categories
- Community Science
- Population Trends
- Important Monarch News
The IUCN has changed the status of the migratory monarch. Learn about the reasons for this decision and the current status of the migratory monarch. Read More
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Eastern Monarch Butterfly Population Decreases In the 2022-2023 Overwintering Season
Categories
- Population Trends
- Important Monarch News
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Western Monarch Populations Increase for the Second Year, but Our Work is Not Done
Categories
- Population Trends
Over 250 volunteers surveyed 272 overwintering sites this winter, tallying a total of 335,479 monarch butterflies observed across the western overwintering sites, an increase of 88,242 monarchs! Read More