A Phantom 3 officially weighs 1280g (just under 3lbs) which is pretty heft. It&#x27;s dense, too. As the article says, probably the biggest risk is if it goes through the windscreen and hits the pilot. I wouldn&#x27;t be surprised if it could do some unpleasant things to a helicopter rotor as well, but I&#x27;m not sure just how strong those are. Birds are a lot squishier so are probably somewhat more benign at the same weight.<p>Bird strikes do cause significant damage with some regularity, even if it&#x27;s not too common.