I have to admit I am a bit amused by this story because I have witnessed first hand zebras being fiesty... and with a giraffe none the less.
We stay at AKL yearly and two years ago a zebra decided that he wanted to eat the giraffes food and had pushed the giraffe out of the way and was kicking the giraffe with his hind legs everytime he tried to come back to the tree and eat. The zebra didn't even face the giraffe, just kept backing up into him and kicking him with his hind legs when he tried to eat the food that had fallen on the ground.
I don't know what was so tasty about the giraffes food or if they feed the giraffes and zebras the same food at the AKL, but I do know that they put the giraffe's food high in the trees where they would normally find it in the wild; the zebra's food would obviously be much lower down on the tree. So, the zebra was eating what had fallen out of the giraffe's feeding box because the giraffe had pulled it out right when we got to the window... then along came zebra and took over.
I have to admit it was funny and of course I didn't have my camera but there were a few families from Wales there laughing it up with us. Can't believe that zebra was so bossy.
So, if the zebra decided it didn't like it's new 'station', the food, the guests on the savannah, etc., you can see why the had to remove them. They can be fiesty!