With that being a target point, it may not have been “customized”.
Is there a public or private archery range nearby?
It could have been an accidental shot with the hawk swooping down to catch some prey, and caught something else instead.
But if it was intentional, my bet is on some stupid high school kid. And if so, the kid AND the parents should be punished with whatever maximum fines and jail allowed as well as lifetime bans from obtaining hunting licenses.... And the kid should be shot at with an arrow.
I used to use target points on customized arrows. Just had to make sure it was the same grainage as the broadheads I intended to use.
After realizing that I still had to tune back to broadheads, I stopped using target heads. I use carbon blades (Magnus) that I can re-sharpen after practice/tuning.
Arrows straight out of the box are a lousy way to shoot. One should take into consideration draw length, bow speed with arrow weight, etc.
I realize that this could be a kid with a 15 lb. Fred bear recurve and cheap aluminum arrows bought at a garage sale.
The picture with the arrow still in the bird suggests a light draw weight.