F111 able to fly up to Mark-5 (5 times faster than the speed of sound), so the pilot can barely see the shape of a pelican/birds while at that speed, so it cant avoid it & have to smash into hose poor living creatures, just like roadkill. These case happen from time to time on commercial airline, but so far no incident had been reported that any plane were brought down by a bird which cost casualty & injury, luckily............ (
View formatted comment » )