There have been only a few bird strikes that caused crashes with fatalities, but many more bird strikes that caused no fatalities and even more that didn’t cause much damage. I’m not an expert on that particular matter but have consulted today with one who knows quite a bit about it (military aircraft maintenance for quite a few years).
If there’s concern about airport security, then I’m sure that airport security folks have the tools they need to stop our enemies from flying model helicopters in paths of landing commercial aircraft. It’s highly likely that law is already in place for them to ground such obstructions.
For example, it’s probably not legal to fly any small aircraft in the direct path of a large aircraft and keep it there. I don’t know that for sure, buy you might check FAA documents. :-)
The JFK drone “hovering” in the landing approach was NOT detected by JFK civilian, military, or DHS radar by all accounts to date, nor has the FBI publicly identified the perpetrator of the near-miss.
The FAA issues “no-fly” advance warning announcements called NOTAMS to law-abiding citizens for all aircraft including model aircraft and drones when VIPS will be in an area. But terrorists will not observe these and there isn’t much evidence of detection ability by authorities for violations by mini-drone operators that I have seen.
The FBI asked the public near JFK to be vigilant and to report any past or future suspicious drone activity to them.