The 2020 annual count of monarch butterflies in the western United States found shockingly few, confirming fears that the insect is on the brink of extinction. Source: https://earthsky.org/earth/monarch-butterflies-of-western-us-nearing-extinction-what-you-can-do…
Tag: monarch butterflies
How do monarch butterflies know when it’s time to migrate?
Overwintering monarch butterflies rely on a temperature-sensitive internal timer to wake them up to make the trip back north, researchers report. Source: https://earthsky.org/earth/monarch-butterflies-heat-sensitive-timer-migration…