Yesterday I drew the outline for this animation of a Red-Tailed Hawk in flight. It's 5 seconds (though I might make it longer) with 12 frames per second, so 60 drawings in total.
The next step is to add color. You can see the first frame has one option, but I will probably explore others before painting the other 59.
Hawks have white and brown feathers, but against a blue sky, their bodies look closer to dark green. I realized while making these that it will be important to have high contrast since birds are recognizable by their shadowy silhouette, even if their true color is lighter.