The bird, apparently a female falcon, wheels into view 100 feet over Edmonton International Airport,flapping her wings — hunting behavior. She pursues a flock of starlings, which scatter into the safety of the woods. The falcon is majestic, graceful and resolute.

She is also a machine — a battery, sensors, GPS, barometer and flight control computer stuffed into a falcon-shaped, hand-painted exterior. A human on the ground controls her wings….Read more

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