I could try to sculpt but i don't have that much time, i would like to. but no time. Having procedural textures is better so you can batch bake multiple textures variations at once.
ah cool, that's a pretty straightforward workflow. I've been baking from 3d model to 3d model and from procedural texture to 3d model, but baking from a photography never came to my mind
bobbing head like pidgeons? sure!
for multiple texture baking you just need to make another variation of the mesh (duplicate mesh) add a new material so your uv's doesn't get lost, and use another reference (picture) and adjust the uv's to the new reference for bake variations if its possible.