CTT's BlūMorpho tracker is light enough for a butterfly

Cellular Tracking Technologies built BlūMorpho, the smallest wildlife tracker yet: 3.5 cm long, about the weight of a grain of rice, and powered by a tiny solar panel instead of a battery. Project Monarch tagged about 1,500 butterflies in 2026, with a goal of more than 2,000.

• Tracker measures 3.5 cm and weighs about as much as a grain of rice
• Powered by a solar panel smaller than the torch on a dime
• About 1,500 butterflies tracked in 2026; target exceeds 2,000
• Attached to the thorax with nontoxic eyelash glue