The splashy monarch butterfly only lives about five weeks, but its entire survival is in question due to threats posed by ...

The Trump administration said Tuesday that it is reconsidering adding protections to the monarch butterfly as a threatened ...

The population of the eastern monarch butterflies in Mexico doubled this past winter season, according to a WWF survey.

This year’s count of 4.42 acres of occupied forest habitat is nearly twice as large as last year's, but eastern monarch ...

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

The number of monarch butterflies wintering in the mountains west of Mexico City, rebounded this year, doubling the area they ...

The population wintering in central Mexico's forests occupied 4.42 acres, up from 2.22 acres during the previous winter.

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

Mexican officials and environmental groups say better weather conditions on the butterflies’ migration route caused the ...

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

The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this ... experts said Thursday. The annual butterfly count doesn't calculate the individual number ...