What you plant — and what you avoid — in the backyard can make a difference to your local butterfly population.

Researchers identified over 100 species that have dropped by more than 50 percent in the last two decades: "This is a wake-up ...

A comprehensive study of U.S. butterfly populations shows dramatic declines in most species, but Pacific Northwest ecologists ...

Only the Pacific Northwest didn’t lose butterfly population on average. This trend was largely driven by an irruptive species, meaning one with extremely high abundance in some years – the ...

Only the Pacific Northwest didn’t lose butterfly population on average. This trend was largely driven by an irruptive species, meaning one with extremely high abundance in some years – the California ...

If the joy of seeing butterflies seems increasingly rare these days, it isn't your imagination. We found declines in just about every region of the continental U.S. and across almost all butterfly ...

At the same time, the population of western monarch butterflies has seen a decline ... The western monarchs fly about 300 miles from the Pacific Coast to inland areas in the West.

Monarch butterflies typically live for a few weeks ... Others migrate to the Pacific coast while some in Florida stay right at home through the winter. While monarchs are popular among the ...

Only the Pacific Northwest didn’t lose butterfly population on average. This trend was largely driven by an irruptive species, meaning one with extremely high abundance in some years – the ...

Monarch butterflies are making their flight north after wintering in Mexico. Here's what to know about the fascinating, fragile traveler.