How did the hunter get hurt while bending over to study some tracks answer key?

Taking into consideration that this person had to bend over to study said tracks, we can narrow down the possibilities to the following:

- He was studying the tracks of a small animal, hence why he needed to be so close and bend down. In which case, he could have hurt his back for a multitude of reasons.

- (As the famous riddle goes) A train hit him while he was studying the rails of the train (train tracks)