Monarch butterflies are unique in their migration patterns. Eastern monarchs travel between Mexico and the U.S., spending ...

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 ...

The butterfly appears to be a hybrid between two known tiger swallowtail species — P. glaucus and P. canadensis — but because ...