"No real birds were physically harmed in the making of the drones."
It has been dubbed the "swarm of swarms" - and is raising ethical and security concerns.
"Sand art is a completely eco-friendly form of artwork."
The wing tastes like: "A crunchy rice crisp cookie with a little touch of raw gelatin."
"When the Notre Dame burned we started to think of rebuilding it with light," one company founder said.
Cops joked an eerie photo taken during the test flight made it appear an officer was being abducted by aliens.
One researcher said: "Along with behavioral studies of insects, this will help us understand the threats they face and how to design conservation programs."
"They would perform environmentally critical tasks such as plant pollination and exciting emerging roles such as finding people in collapsed buildings."