Welp I noticed something while staring at my "wings of fire the brightest night" is that you can see visibly that sunny is half hybrid(I haven't searched to see if I can find any icewing traits, probably not) but here it is

Notice the little dots/downward spikes on her scales that are on her neck and tail? Well only one other tribe has those traits!

If you haven't guessed it then okay?
But the only other tribe that has those are nightwings!

Here look at the rest of the tribes

Sorry for the weird angles.