Video of Birds Attacking an Unmanned Aerial Vehicle (UAV)

Mother Nature on the basics of asymmetric warfare :

"However, on one flight, a test Raven attracted the attention of two nearby crows, who initially squawked a territorial warning at the UAV. Unsuprisingly undeterred by the warnings, the UAVs carried on on their descent and were subsequently attacked by the crows. See the video clip below.

The UAVs were required to remain at low altitude for the duration of each sortie, airspace above the city forming part of the western approaches to Brisbane International airport."

And no, don't even think on speculating of terrorists training divisions of crows to attack, or early warn of UAVs flying around the birds' air space, unless of course your wild imagination prevails.