Amazing stuff!
"Cellular Tracking Technologies, a wildlife-tracking hardware company, has built radio tags light enough to ride on a Monarch butterfly, letting scientists track individual insects across their long migration routes."
"... The breakthrough is the result of a tiny solar-powered radio tag that weighs just 60 milligrams and sells for $200. Researchers have tagged more than 400 monarchs this year and are now following their journeys on a cellphone app created by the New Jersey-based company that makes the tags, Cellular Tracking Technologies."
Revolutionary Tracking Study Follows Monarch Butterflies from Canada to Mexico Using Groundbreaking Technology and Continent-Wide Collaboration (original press release) "Over 400 ultra-light transmitters deployed by over 20 partner organizations deliver unprecedented, individual-level view of monarch migration using dedicated receivers and crowd-sourced location networks"
The transmitter is hard to see. I suspect it is the tiny black object behind the head of the butterfly.
