The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

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

The number of monarch butterflies in California is in sharp decline this year. This is the second-lowest population recording ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in ...

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

In 2023, more than 16,000 butterflies were counted at one local grove. The most recent count was a tiny fraction of that.

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.

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

Butterfly and bee monitoring schemes are being launched in the island, and the Nature Commission is looking for citizen ...