This was fast project. My job was to do multiple animations (this was one of them) for theater play in quite short time. The bird animation was one day job, rendering most of the time. The animation was needed to be artistic, and it is artistic imo.
I used, photoshop for silhuette draw with my wacom tabletscreen, after effects for northern lights and comoposition, and the Cinema 4D for rig, animation and rendering the silhuette. Premiere was used to slow down the speed of animation (i know, i could do it inside AE, but i also used Premiere for encode the project to right format, i had made the preset for that format inside premiere).
And image aspect was 4:3 and resolution 1024 x 768, this animation was designed for "specific" projector.