Save Article
Thanks to tiny new ultralight radio tags small enough for a fragile butterfly to carry, scientists are getting a rare, real-time look at how western monarchs move through their winter habitat.
It’s part of a breakthrough tracking effort reshaping what we know about one of North America’s most iconic migrations.
In November, the Xerces Society for Invertebrate Conservation joined with scientific collaborators to deploy roughly 100 ultra-light Bluetooth tags along the Central Coast, offering an unprecedented look at how Western monarchs move through their fragmented winter habitat…