Alagender

Alagender is a xenogender relating to the sky, anything that flies, birds, and wind.

History & Flag
It was coined by Reddit user u/bonesandcommunism on or before February 18, 2021. The flag colors are meant to resemble the sky, and the feather symbol represents birds, it was made on the same date.

Etymology
The term comes from the Latin word ala, which means wing.