Dragonfly wireless

National Geographic News published an interesting tidbit on the use of miniscule radio tags to track dragonflies.

As they note in the story:

The transmitters—which weigh 0.01 ounce (0.3 gram) and are about 0.4 inch (1 centimeter) long—are glued to the insects’ undersides. A single wire antenna runs the length of the abdomen, and a tiny battery powers the device for up to a week.

That’s one tiny tag! I’m going to have to Google this and see if I can turn up more about the tech being used. It makes me wonder how far we are from tiny dragonfly migration tracking video cams…