From a very early age, provided it is properly cared for and has not been injured. Contact a local vet for advice, or a local bird rescue shelter. Be advised that you will be taking on a pet for life, as wild birds raised by humans cannot normally be released into the wild.
If you are not sure about your readiness to deal with the matter, take it to a shelter netpets.org/birds/birdresc/birdgrp.html.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.