I tried recreating a PS1 style lowpoly Hawk. It doesn't look proper without the PS1 shader that they use. So I also imported this to Unreal 4 and made a PS1 shader. You can see the shader in work here at my Artstation: https://www.artstation.com/artwork/qAgvW2
I used image references for hawks and then scaled them down in Photoshop. Also had a fun time doing the bones and animations for the flying. I know it doesn't look the best or the most realistic flying animation but I tried.