Quite a lot of sources : D
This picture wants to tell a message.
Color Adjustments, Gradient maps for the main "surreal" color effect.
the painted look of the pictures was made by using filters. some masking, quite a lot of perspective transforming. added a vignette, a gausian and radial blur for the edges.
Birds (brushes): http://www.brusheezy.com/Brushes/1473-Bird-Photoshop-Brushes (5 years and 2365 days ago)