French army grooms eagles to down drones

Since mid-2016, d'Artagnan has been trained to target potential aerial threats. The other trained birds at the Mont-de-Marsan airbase are called Athos, Porthos and Aramis, all characters from Alexandre Dumas', "The Three Musketeers."

Some 130 kilometers (80 miles) south of Bordeaux, Mont-de-Marsan is one of five air bases in France that uses falconry. Usually, the birds of prey are kept to scare other birds away from the runway. This reduces the risk of accidents during takeoff or landing. But with France on high alert since January 2015, after a string of terrorist attacks, they have now been appointed drone hunters.

Within 20 seconds the raptor has the drone between its talons. It pins it to the ground and covers it with its broad wings. Police in the Netherlands were the first to come up with the idea of using raptors to catch drones, introducing bald eagles into the service in late 2015.

Eagles are fast, reaching speeds of up to 80 km (50 miles) per hour. Hatched in captivity, the four "musketeers" were served food atop wrecked drones from the age of three weeks. This taught the birds to seize remotely piloted aircraft for food. Now, when they hear a buzzing drone, their hunting instinct kicks in. Their falconer rewards successful interceptions with a hunk of meat.

The French army followed suit last year, but opted for the golden eagle. These birds are natural-born killers with hooked beaks, amber eyes and a wingspan of up to 2.2 meters (seven feet). Like all birds of prey, the golden eagle has excellent eyesight and is capable of spotting its target from two kilometers away.

The golden eagle has powerful feet, that are feathered all the way to the toes and large, sharp talons to snatch up a variety of prey. This is usually rabbits, squirrels or hares. But in Mont-de Marsan they go for drones.

To prevent the birds from harming themselves, the military has designed mittens made of leather and Kevlar, an anti-blast material, to protect their talons. "I love these birds," their falconer says. "I don't want to send them to their deaths." The falconer cautions against setting "impossible" tasks for birds, such as launching them against larger drones with potentially deadly propellers.