How can a bird get bird flu?

From other birds since it is a flu virus. It moves among birds just like the regular flu moves among people. By direct or indirect contact between the birds.

Birds spread the virus in their feces and saliva. Other birds can get it from eating at the same feeders or directly contacting the sick bird for example.

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.