A study compiled data from more than 76,000 butterfly surveys across the continental U.S. The declines seen in the last 20 ...

Just a few years ago, the eastern monarch was considered endangered by the International Union for Conservation of Nature ...

The Trump administration is reopening public comment on a proposed rule that would list the monarch butterfly as threatened ...

The U.S. Fish and Wildlife Service is opening a second comment period as they work to list the monarch butterfly on the ...

These late-blooming plants native to North America help feed butterflies — especially monarchs-— at a crucial point.

The number of monarch butterflies overwintering this year in Mexico has nearly doubled, according to the annual census data ...

The monarch butterfly's annual migratory journey from Canada to Mexico is a breeze compared to the federal government's ...

The U.S. Fish and Wildlife Service is reopening the public comment period for a proposed rule to list the monarch butterfly ...