Monarchs totally rule :)

Nature, the long running treasure of PBS, outdid itself in filming Monarchs resting by the millions while wintering in Mexico. Stellar beyond measure.

In a recent video from Nature on PBS, you'll be able to get super close to resting Monarch Butterflies. As they wait for the temperature to rise, they huddle together to keep warm. Without disturbing any of the butterflies, they've managed to take close-up footage of the butterflies. The way they've managed to do this is by disguising a drone to look like a Hummingbird. As described in the video, hummingbirds are not a threat to the monarch butterflies, and for that reason they don't react to it at all. 

Once the temperature rises sufficiently the butterflies take flight and the scene is simply magical. The butterflies are able to comfortably fly around and even land on the drone without being hurt. This is because the drone has been designed in a way to ensure it cannot harm the butterflies. As the narrator explains in the video, the drones moving parts have been shielded to keep them safe. 

Excellent to a fault. :)