"Near the brook a heron lay in frozen stubble. Its wings were stuck to the ground by frost, and the mandibles of its bill were frozen together. Its eyes were open and living, the rest of it was dead ... As I approached I could see its whole body craving into flight. But it could not fly. I gave it peace, and saw the agonised sunlight of its eyes slowly heal with cloud."
January 1, 1970
https://en.wikiquote.org/wiki/Wild_animal_suffering