And a bird of prey attacking an ornithopter: https://youtu.be/VDihDrdPBqo?t=215

That video makes me realize that we're still in the earliest days of drone warfare.

Imagine the ability to soar on thermals for hours, it would greatly change reconnaissance and loitering strike drones. A flock of strike eagle drones all turning towards your convoy's position would be a terrifying thing to see. I don't know how you'd be able to attack such a flock effectively if they scatter when sensing and incoming missile or shell. Perhaps an air battle of the future will look like 2 flocks of birds crashing into each other?

I wonder if a hummingbird drone would be more energy efficient than a quadcopter?

Eerily good