I see many birds shot annually that are heart/lung shots where the bird flies 100, 200, 300 yards away before flying straight up in the air, only to fall stone dead…I watch “missed” birds fly away regularly…only to do what I described. I’m in the presence of hundreds of birds that are shot/shot at each fall, not that long ago it was 1,000+ shot/shot at. You are right, it may be rare that this would occur as a part of a triple, but the basic condition I describe isn’t rare. It becomes less likely that a hunter would watch a bird fly away if he also had other birds in the air, or, birds that just dropped. A lot of guys don’t watch a single bird fly away that they’ve just shot at…it’s worth doing, especially a bird that showed some subtle indication that it was hit…its flight rhythm changed, something looks different, whatever. One time I was watching a big group marching in some CRP…10+ hunters…watched a bird get shot at by many of the guys and keep flying back behind them, only to eventually do this…it flew far enough that it died on an adjacent tilled field…I walked out with a dog and picked the bird up…the hunters had already loaded up in their pickups with benches in the beds and taken off…