De Waal relates a similar story of Kuni, a female bonobo chimpanzee at Twycross Zoo in England. One day, Kuni encountered a starling that had been stunned during some misadventure. Fearing that she might injure the bird, Kuni’s keeper urged her to let it go. Kuni, however, picked up the starling with one hand, and climbed to the top of the highest tree in her enclosure, wrapping her legs around the trunk so that she had both hands free to hold the bird. She then carefully unfolded its wings and spread them wide open. She threw the bird as hard as she could towards the barrier of the enclosure. Unfortunately, it didn’t wake up, and landed on the bank of the enclosure’s moat. While her rescue attempt didn’t succeed, Kuni certainly seemed to act with good intentions, and tried to make amends by guarding the vulnerable, unconscious bird from a curious juvenile for quite some time.
Mark Rowlands, The Kindness of Beasts