Animate bird from painting

I have a client who would like to animate this picture: [login to view URL] Here's the deal. The background doesn't change. The bird will flap its wings and fly up from the bottom right, and get larger as it flies up and through the image. As the bird flies up and through the image, the pocket watch will have things falling out of it as it goes. The last thing to fall out will be the note (item which is in the bottom right of the sample image). The note will stay up long enough for someone to read it comfortably, then be wiped away with the falling feather. The raw image is 300 dpi at 12000 x 9000. We are going to need the animation designed at 1080p, 1920x1080. Final delivery will be all the raw files. Final delivery date will be April 2nd.