The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as ...

This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...

Monarch butterflies, known for their distinctive ... according to Monarch Joint Venture, a group that works to protect monarchs. Pesticides have contaminated much of the remaining plants ...

For the past three years, more than 200,000 western monarch butterflies spent their winters ... a nonprofit environmental group, tallied just 9,119 western monarchs — a dramatic 95% plunge ...

Monarch butterflies, known for their distinctive ... according to Monarch Joint Venture, a group that works to protect monarchs. Pesticides have contaminated much of the remaining plants ...