<Snipped quote by vertigh0st>
Good question! Avians are adept at shifting and can shift into their complete bird or fully human form easily. They can also shift themselves anywhere inbetween the two forms. Such as have a bird body with a human head, like how traditional harpies are depicted. Most Avians prefer to keep their large wings when in human form, so they can retain their flight abilities. When I say adept I mean extreamly good at it. For instance, they can turn their fingernails into talons effortlessly; Shift just their eyes to use their excellent bird vision at will, and so on.
Oh wow! This was very helpful! Thank you so much~ I will definitely be working on an Avians CS and will hopefully have it finished sometime this weekend. ^_^