Are monarch butterflies endangered? Monarch population numbers are falling and it's clear that these butterflies need our ...

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

At a festival last September in Minneapolis meant to celebrate the monarch butterflies' migration before winter, some monarch enthusiasts noted that the insects' prevalence seemed to have dwindled ...

Painted lady butterflies are world travelers. The ones we encounter in Europe fly from Africa to Sweden, ultimately returning ...

Before National Geographic published its famous August 1976 cover story detailing the search for the monarch butterfly’s wintering ... A 2,000-mile migration was thought to be a “foolish ...

The migration of painted lady butterflies remains less understood than that of other species, such as monarch butterflies. Future research will examine whether these findings apply to broader ...

Fewer-than-usual monarch butterflies ... when only 199 butterflies were counted at the overwintering site. Pismo Beach’s butterfly count matches migration data from the rest of the West Coast.

MADISON, Wis. — The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing ...