There are much easier and much more natural solutions. Chief among these is employing Falcons, which are like drones except they're alive, much faster than crow

There are much easier and much more natural solutions. Chief among these is employing Falcons, which are like drones except they're alive, much faster than crows or drones, and incentivized (by food). Sometimes you don't need a technological solution, sometimes what we already have is good enough and it doesn't get much better than simply using the existing circle of life.