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

Psst—monarch butterfly migration is simply magical. Use this monarch migration map to track the epic journey. Now the adult butterfly is nearly ready to emerge from the chrysalis. This is the ...

In the Yukon, Porcupine caribou travel 3,000 miles. This is the longest migration by land of any mammal on Earth. Monarch butterflies fly about 3,000 miles each year. Some will travel all the way ...

Colony estimates at central Mexico overwintering sites indicate that monarch butterfly (Danaus plexippus) populations have declined over the past two decades. Among the leading causes of this ...

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

Monarch's multigenerational migration is legendary — a journey of up to 3,000 ... their wings around 5 to 12 times per second — much more slowly than the average butterfly, who flaps about 20 times a ...

A monarch butterfly feeds at Cape May Point State Park in Lower Township, N.J., Wednesday, Oct. 14, 2020.Get Photo Monarch butterflies roost as the sun begins to set at The Nature Conservancy's ...

A butterfly sits on a leaf at Monarch Grove Sanctuary in Pacific Grove on Nov. 10, 2021. Photo by Nic Coury, AP Photo For the past three years, more than 200,000 western monarch butterflies spent ...