The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...

Thogmartin and other researchers have evaluated more than 200 scenarios for restoring greater than 1.3 billion stems of ...

In 2023, more than 16,000 butterflies were counted at one local grove. The most recent count was a tiny fraction of that.

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

Some research indicates that certain types of milkweed such as Asclepias Curassavica the tropical variety sold at home ...

Habitat destruction ... Xerces Society and the University of Nevada-Reno found that milkweed leaves, the main food source for the monarch caterpillar, were contaminated by 64 pesticides.

Monarch butterfly populations have declined nearly 95% since the 1950's, mainly due to habitat loss. The Deschutes Land Trust ...

Fewer-than-usual monarch butterflies migrated through ... Outside of the weather, habitat loss and a decline in milkweed and nectar plants has reduced the butterfly population, Howard said.

Scientists are grappling with a stark population decline of the western monarch butterfly after the species’ numbers hit a ...

Habitat destruction ... Xerces Society and the University of Nevada-Reno found that milkweed leaves, the main food source for the monarch caterpillar, were contaminated by 64 pesticides.

Habitat destruction, pesticides and extreme weather fluctuation due to ... Testing by the Xerces Society and the University of Nevada-Reno found that milkweed leaves, the main food source for the ...