Just had an idea for some more character creation body part ideas and some other minor related ideas:
Bird themed body parts.
No mechanical advantage (Example: Cannot be used for flight)
Like other non human options there could be some incidental scenes added later (has a tail ? NPC's might grab it, Has a particularly flexible tail ? Masturbation / sex options as examples).
Anyway, back to the original suggestion:
I figure the developer wants to maintain the more or less human shape for mechanical simplicity so so again, the following are purely visual options.
1 to 3 feathered 'hairstyles' - have a look at the shape of bird head feathers for inspiration.
Something streamlined and angular, a feather pony fail and a feather 'crown' might be interesting.
1 to 3 feathered wings upper back 'accessory' - the tail if present occupies the lower back slot, wings use the upper back slot (might need to add a separate slot for this and could have other non bird themed wing options like a demon / bat / succubus wings as examples)
A small / chibi wing set, an average sized one and one that looks big enough for actual flight (like angel wings ?) might be interesting.
1 to 3 feathered 'tails' - have a look at bird tail feathers for inspiration.
Maybe a wedge up, wedge down and peacock style of tail could be interesting.
1 to 3 beak 'mouth' styles - have a look at bird tail feathers for inspiration but I suspect this will be the hardest part to get looking right.
Maybe a small pointed one, a hooked predator one and a duck might be interesting.
Feathered body style - A feather pattern that covers the skin of the PC, close to the body to make weaning clothing and other normal body interactions possible.