Another tribe that uses its wings to run, though I imagine it more like ski spokes than another set of legs like mudwings
Edit:
[ID: a sketchy animation of a Icewing from Wings of Fire running. It uses its wings, which have two clawed toes, like an extra boost to run. The art is done with messy blue lines on a lighter blue background and the 7 frames are numbered. End ID]
I offer the frankly hilarious scenario of zenos and estinien having to work together (probably because of tataru) and a little bit of headcanon-ing I have in regards to the one main issue they run in to when theyre a duo.