April 4, 2020
See the full article:
https://entomologytoday.org/2020/03/26/deep-tracks-only-radio-telemetry-blazes-…
When most people hear “butterfly,” images of the beloved orange-and-black monarch (Danaus plexippus) spring to mind. But that iconic fluttering insect has a problem: Its overwintering numbers have plummeted since the 1990s—a situation so serious that the U.S. Fish and Wildlife Service is slated to decide whether to add it to the endangered species list at the end of this year...