The count estimated a winter population of 9,119 monarchs this year as climate change, habitat loss, pesticides and disease ...

Monarch butterflies are important culturally and ecologically across ... A typical monarch life span (from egg to adult) is 2 to 6 weeks, but migrating monarchs live up to 9 months.

The Western population of the monarch butterfly hit a near-record low with fewer than 10,000 found living in California this ...

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

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

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

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

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

Some four to five dozen Monarch butterflies, one or two at a time, were alighting on many zinnias then massively in bloom, ...

Monarch butterflies (Danaus plexippus ... What we need is reliable long-term data on adult numbers. Hence the call to reinvigorate interest in mark-recapture and reporting. We need the help ...

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 ...

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