Insects fly far away when they see humans, making the close-up shots difficult. The PBS program "Spy in the Wild" began to put the mechanical hummingbirds into the Monarch Butterfly groups. The hummingbird eat nectar so the butterflies do not see it as a threat and it can easily get into the butterfly group without scaring the butterflies away to successfully filmed the spectacular scene that thousands of butterflies flying in the sky.
Monarch Butterfly is one of the well-known butterflies in North America, When the weather get cold, they would fly from their habitat in Canada and the northern United States to a dense forest in central Mexico, stopping in swarms of fir trees to preserve heat and wait for the next returning when the weather get warm again.
When the sun at a 50-degree angle and illuminate to the butterflies resting on the trees, groups of butterflies would flap wings to the sky, which just like the colorful scraps of paper floating from the sky. The mechanical hummingbird was surrounded by the butterflies, thus achieving the wonderful images.
The Spy in the Wild is filmed with different mechanical animals, including monkeys, squirrels, crabs, grizzly bears, leopards, etc., from a subjective perspective similar to that of the animals involved. For other short films shot from an animal perspective, go to the PBS website.