In the old cannon-armed sailing ships they sometimes loaded “Langrege”, which was short lengths of chain plus whatever odd metal scrap they could grab for the projectile. Tore the heck out of rigging, sails, and man alike at close range. Would work equally well on drones.
And if somebody ain’t thought of it yet a super-glue sprayer would prove mighty interesting doing battle at altitude!
That is what I was thinking. That is fine for the $25 plastic drone but what about the serious stuff. They are going to teach these birds to know the difference? Now if the could train a vulture or bat to do something like that...then possibly. Train what was a bird threatened by extinction.....wth???