This variation of the Feather Stitch looks more complicated than it really is. Each Feather is actually a Twisted Fly Stitch, making the result look like a complex braid.

Work from right to left. Start with a Twisted Fly Stitch, angled toward the upper left (Step 1). The second Twisted Fly Stitch is angled toward the lower left, with the new endpoint between the two endpoints of the first stitch (Step 2). Do the same with the next stitch (Step 3).