Any wing of a bird that flies and have only feathers is fair game. Wings like penguin wings would fall in the special category.
Butterfly-like wings. It can have almost any shape butterfly wings can have, as long as it's not over complex or big. It need to be only one pair of wings. It can have transparency.
Bat-like/dragon-like membrane wings.
Beetle wings, fly wings, dragonfly wings. Basically any bug wing that is not a butterfly/moth. It still needs to be only one pair of wings. The wings that naturally have transparency can have transparency.
This trait allows the use of different types of wings together. Each rare wing used is considered a separated rare trait.
Allows two pairs of wings. All the wings need to be of the same type unless paired with Mismatched Wings.
Wings made of gems! Can be any type of common wing, any other rarity of wing will need to be added with the corresponding trait change.
Fins of any aquatic animal, including big and fancy fins.