Humans show love by giving food. Before I knew better, the very first thing I did when I found a sick pigeon was stuff some food into it, so one of the hardest things I have had to train myself to do is
not to feed a starving pigeon too heavily and too soon.
This article is based on experience of raptors , but the same principles apply:
Avian Emaciation
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Life is as dear to the mute creature as it is to man. Just as one wants happiness and fears pain, just as one wants to live and not to die, so do other creatures.
His holiness the Dalai Lama