So, I was looking through the archives, and I started wondering something: What are these elves with wings we've been seeing?
Here and here, we see them, but neither time are they treated as unusual. I can't identify them for sure, but I'm guessing they're either outsiders or some variety of homebrew elves. However, seeing as how different those two are, I can't tell who they are for certain.
A recent study shows that if you say "a recent study shows" before saying something completely ridiculous, nobody will catch on.