Actually nope haha, they aren't at all. They're little weirdos that actually evolved of one of the bird ancestors a very long time ago, that somehow got on that planet through accidental portals. That ancestor went down many paths regarding evolution, and certain regions on the planet somehow forced it down a peculiar path over the millions of years. It might be a bit tough to notice all those birdy-look traces in them, I might have to make a chart on how it happened one day, but I just don't really feel like doing that soon.