Board Thread:Speculation House/@comment-4606441-20131101054911/@comment-24994749-20140623040406

Well, one of my ideas is that, if faunus with bird like wings or bat like wings exist, they could be extremely rare because, unlike tails, ears and horns that can easily be hidden, wings (particularly wings big enough to raise you from the ground) would be too big to cover them and pass as human. So, during the war, these kind of faunus would have been easier to spot and kill which could have drawn them near extinction.