The importance of forests for the monarch butterfly's survival
English
March 19, 2026
Every year, the monarch populations of eastern North America spend the winter in central Mexico. And if the monarch travels more than 4,000...Read more
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Mission Monarch
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Mission Monarch
Flash or Mission? Understanding the two types of data at Mission Monarch
English
August 20, 2025
In participatory science, every observation counts. But not all data have the same ecological value. At Mission Monarch, a program documenting the...Read more
Why save the monarch butterfly?
English
July 31, 2024
Across North America, considerable resources are being invested in protecting the monarch butterfly, the migratory populations of which have dropped...Read more
The milkweed community
English
May 24, 2023
Common milkweed, that singular plant found at the edge of forests or alongside fields, is the host plant of the monarch. In mid-July, its pink...Read more
The monarch and light pollution
English
November 3, 2022
Light pollution doesn't just obscure the stars; it also disrupts wildlife. The scientific community is particularly interested in its effects on...Read more
Time to get at your milkweed seeds!
English
October 14, 2020
Autumn is here and for some people, that means beautiful days in orchards picking apples, or in the fields harvesting pumpkins. But were you aware...Read more
Are there fewer monarch butterflies this year?
English
August 19, 2020
Every year, we’re asked how the monarch butterfly population is doing. Is the monarch population smaller this year, or have the monarchs simply been...Read more
Monarchs and milkweed, a complex relationship
English
July 1, 2020
The monarch butterfly depends on milkweed to survive, the plant being the caterpillars’ only food source. It’s a system that seems simple ‒ but that’...Read more
The Challenges of the Monarch Butterfly's Autumn Migration
English
November 13, 2018
Faithful to instinct, the monarchs have hit the road for Mexico. The autumn migration is a great adventure, but one that only an estimated half of...Read more
