Swift is inspired by Shadysmarty’s Wisperwind. In particular, she is inspired by how Waggytail drew Wisperwind. A quick gallery of Waggytail’s work on the character can be seen here: https://www.reddit.com/r/fluffycommunity/comments/iv0q4p/smawtymustdies_wisperwind_as_drawn_by_waggytail/
One of the four fluffies introduced in Steamfluffs, Swift is a pegasus fluffy outfitted with special wings that allow her to fly.
You can read Steamfluffs here: WARNING- scat/gore https://www.fluffycommunity.com/t/steamfluffs-author-oculus/4019/
My recommendation is to ( a) make an account and ( b) filter out the things you don’t want to see, such as “abuse”, “gpre”, “shit” and so on. Also, Fluffycommunity is the replacement for the defunct fluffybooru. And yes, the fluffy pony fandom is known for these things, but we’re hoping that the new site will allow people to get more out of fluffies than just the negatives.