When I played Zelda: Breath of the Wild and met the heavily redesigned Ritos, I took an immediate liking to their designs. Although the fact that they're fully bird-like helps, it's mostly because of the way their wings are designed.
If you notice, their wings are different from a lot of bird-like humanoid designs. Their wings also act as their "hands" instead of only having wings or both hands and wings separated. I'm wondering how could a humanoid flying species (Garuda, Harpy, etc.) evolve with this style of wings and still be functional?
EDIT: Sorry, I wasn't being specific on one detail. When I meant the wings acts as their hands, I meant the other way around; Their hands act like wings, with feathers covering their fingers and evolved in a way capable of flight. It makes more sense in retrospect. So with that in mind, how could a speicies still fly with wing-like arms, regardless if there more like a bird or a human?