Your OC has discovered a magical portal to an underwater world. Participate for 60XP
Jay Snowflower, an avian elf with bluejay-style plumage.
The avian elves are a pet project meant to take winged humanoids--an idea many people seem to be infatuated with--and make them actually work. Humanoid bodies are not build for flight at all, and the wingspan you'd need to lift one off the ground would have to be tremendous. Thus, the workaround for avian elves is that their feathers hold a latent enchantment that projects a sort of magical force field all around them in the shape of a large bird, when they fly, allowing for aerodynamic flight and enough lift to actually get off the ground.
Jay's pronouns are they/them/theirs