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

On Thursday, invertebrate conservation group the Xerxes Society released the results of their 28th annual Western Monarch ...

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

They are brightly colored and unique, both as caterpillars and later as mature insects ... In a 2022 study, we analyzed counts of monarch butterflies during the North American Butterfly Association’s ...

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

Western Monarch Butterflies have reached record low numbers along the Central Coast, according to the U.S. Fish and Wildlife Service.

Western Monarch Count observed a peak population of 9,119 Monarch butterflies in California this winter, marking a sharp decline in the last few years. The count, administered by ...

Monarch butterflies have declined 80 percent or more in recent decades Each year, eastern monarchs embark on a migration spanning thousands of miles and multiple generations to overwintering ...

With the recent proposed listing of the monarch butterfly under the Endangered ... the food source for monarch caterpillars. One of these, called methoxyfenozide, is likely to be highly toxic ...

“A significant deterioration in numbers was found, according to the survey respondents,” said Martin Visser on behalf of the Moths and Butterflies of NZ Trust (MBNZT). “We compared the results of this ...

FILE - A monarch butterfly on milkweed in bloom ... Gardeners can also plant milkweed, the main food source for monarch caterpillars. “It’s really an all-hands-on-deck effort that’s required ...

Citizen scientists are called on to help with tagging monarch butterflies and find out why their numbers are dropping.