In the United States, perhaps no bug has been counted as often as the butterfly. "There's a lot of passion for them, they're very charismatic," says Collin Edwards, a quantitative ecologist at the ...

Monarch butterfly numbers are flying higher, but they still have many miles to go. According to a pair of 2025-2026 reports from the World Wildlife Fund and partners, the population of eastern monarch ...

Butterflies of all kinds of species, in all parts of the country, have declined by one to two percent per year since 2000. Butterfly numbers have fallen by nearly a quarter since 2000 In the United ...