Nice work man, I really like the contrast between the front white bird and the rest of the environment. It also reminds me of the short animated film 'RUIN', it could have been a concept piece for it. I also like the trees you've painted on the left. The only suggestion would be to have some old rubble on the ground as well, seeing how the buildings are damaged (the smoke coming from the top of the right building suggest a explosion?). But now I'm kinda nitpicking, good job.