Bird
Rest in Peace
The word that identified the reason that happened was "his". That is what jack donkeys do. And, that is how they kill predators along with stomping on them. Jacks are good only for breeding. They are NOT good guard animals. :2cents:
He was a young gelding that I had recently bought at an auction. Both he and the goats were in a pen around the barn; less than a quarter acre in size. And he could see and hear 4 donkeys in a neighbor's pasture a couple of thousand feet away. So he was walking up and down the fence like a caged animal wanting to get to those other donkeys.