The hotter conditions produced more potent toxins in the milkweed. But the researchers said that surprisingly, the parasitic ...

The Western monarch population has plunged more than 95% since the 1980s, and has a more than 99% chance of extinction by 2080. Western monarchs primarily spend winters along the California coast.

Pacific Grove is known as ‘Butterfly Town USA’ for its role as an overwintering spot. As the insect’s population plummets, residents are coming to its rescue ...

Adult monarch butterflies are large with bright orange wings, white spots and black veins and boarder. The U.S. Fish and Wildlife Service is recommending federal protections for the species as factors ...

Every winter, millions of monarch butterflies journey thousands of miles across North America to spend winters in the forests and mountains of central Mexico. But over the years, the beloved butterfly ...

Monarch butterflies are among the most beloved insects in North America. They are brightly colored and unique, both as caterpillars and later as mature insects. Monarchs are found in every U.S. state ...

An iconic butterfly that waits out the cold months along the California coast each year may soon get added protections. The U.S. Fish and Wildlife Service has proposed listing the monarch butterfly as ...

With its charismatic appearance and awe-inspiring migrations, it's not surprising that the monarch butterfly motivates gardeners to provide extra care for these pollinators in their gardens. These ...

Federal wildlife officials on Tuesday moved to add the monarch butterfly to its endangered species roster, citing decades of steep population decline of the striking black-and-orange insect. The U.S.

MADISON, Wis. — U.S. wildlife officials announced a decision Tuesday to extend federal protections to monarch butterflies after years of warnings from environmentalists that populations are shrinking ...