Flying with drones through a tree can be incredibly difficult. Secondly, someone steering a drone will probably not have the same yields as someone climbing. In

Flying with drones through a tree can be incredibly difficult. Secondly, someone steering a drone will probably not have the same yields as someone climbing. In consequence, this would require the whole drone process to be fully automated. A fully autonomous drone flying through trees recognizing the correct cones and managing to harvest them is even harder. Add the short battery life and I fear the economics simply don't work out.