The "sky" pokeballs (feather/wing/jet) seems to only work on pokemon you see in the field that are flying in the air. Throwing them at pokemon on land or in sea does nothing and it just bounces off of whatever you throw it at.
I have tons of Sky Tumblestones and crafted a bunch hoping I could use it like any pokeball but I can't find any other uses.
Is there anything else I can do with these pokeballs?
I'll probably sell most of them off if there's no other point in keeping them. I barely see any flying pokemon anyway.