Aearee

The aearee were the avian creator race of the world. They originally inhabited the Aearee Enclaves on a massive island in The West Isles. This island existed off the coast of Miranor Province
They rose to prominence around the time of the Tearfall. They established the Aearee Empires across the world, and built a few grand aeries. The rise of these empires (along with those of the batrachi) prevented the yuan-ti from fully claiming the power the sarrukh empires held before their fall.
The aearee later experimented on domesticated landwyrms to create winged wyrms, or wyverns. Supported by wyvern forces, the Aearee-Krocaa empire commenced a rapid expansion.
The aearee of the Kookrui-Shara rookery fell into conflict with the gnolls of Urgnarash. Gnoll shamans, following Yeenoghu, summoned marrash to spread disease among the aearee. Aearee crops were blighted, and the aearee suffered the Wasting Plague. The Aearee-Quor were decimated, and many of them began worshiping the demon lord Pazrael to seek salvation.
The aearee were the last of the creator races to take control of the world, an organization that was created in the Isstosseffifil Empire of the sarrukh to study the magics of the races native to the world. It was primarily based out of the Hall of Mists, which was located in the High Forest, very near The Forgotten Lands of Esperon. The studies of this group were eventually codified into the Nether Scrolls, which contained the fundamentals theories of magic and became the basis of nearly all magical teaching in the world.
Finally, dragons all over Fteh world gathered in the first Flight of Dragons to assault the aearee in the sky, on land, and underground. The Aearee Empires fell, as Viakoo was burned from the air and Shara was conquered by the dragon-general Nagamat. Following this, the remaining aearee fled. Essentially nothing is known of their history after that point except that they eventually created or devolved into the aarakocra.