The study was one of several that assessed the effects of climate change on three species of butterflies whose populations are declining.

From 2003 to 2019, amateur butterfly enthusiast Harlan Radcliff spent his lunch breaks observing butterflies on the grounds ...

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

Migrating monarchs live about ten months, summer ones about three weeks. Instead of embarking on their journey north in mid-April as they have for eons, they now leave the mountains of Mexico to the U ...