The Ellwood Mesa Butterfly Grove used to be California's largest wintering site for monarch butterflies, but in 2024, only 30 butterflies were counted.

Swaner Preserve and EcoCenter will pair the exhibition with additional programming to help adults and kids learn more about, and engage with, butterflies found in Utah.

Are monarch butterflies endangered? Monarch population numbers are falling and it's clear that these butterflies need our ...

Much of California’s Habitat for the migratory Monarch butterfly is gone. Wild fires have decimated groves of trees and plants where the Western Monarch winters. The typical flight plan of the Monarch ...

Sometimes, nature's surprises come with wings. In a new study, scientists have pulled from a 35-year dataset to examine ...

Monarch butterflies in the western U.S. have dropped to just 9,119 this year. In 2023, the count was 233,394, meaning a 96% decline.

The findings challenge previous assumptions about butterfly migration and highlight the role of phenotypic plasticity.

This year the organization counted 9,119 monarchs, the second-lowest total since tracking began in 1997. The organization has ...

A fund set up by STRI staff scientist Annette Aiello intends to provide long-term funding for the preservation and management ...

The monarch butterfly population spending the winter in the western United States has declined to its second-lowest level in nearly three decades.