KATWIJK, the Netherlands — Its wings beating against a gathering breeze, the eagle moves gracefully through a cloudy sky, then swoops, talons outstretched, on its prey below.

The target, however, is not another bird but a small drone, and when the eagle connects, there is a metallic clunk. With the device in its grasp, the bird of prey returns to the ground.

At a disused military airfield in the Netherlands, hunting birds like the eagle are being trained to harness their instincts to help combat the security threats stemming from the proliferation of drones.

The birds of prey learn to intercept small, off-the-shelf drones — unmanned aerial vehicles — of the type that can pose risks to aircraft, drop contraband into jails, conduct surveillance or fly dangerously over public events.