Kenku

In ancient times, kenku were black-winged angels—ambassadors who served The Raven Queen as her emissaries of death. Their voices were once heard across entire planes, calling the dead to the Raven Queen's embrace. The kenku likewise served as her loyal warriors in The Calamity, and even saved her from a near-fatal encounter with the Betrayer God known as Tharizdun, the Chained Oblivion.
Though the kenku saved the Raven Queen from oblivion, all of her black-winged emissaries were consumed by Tharizdun's infinite void. For long years, the kenku were thought to have been annihilated, and it was only when Tharizdun was defeated and chained by the god Ioun, the Knowing Mentor near the Calamity's end that they were freed.
When the gods sealed themselves behind the Divine Gate, the Raven Queen realized what her emissaries had sacrificed to save her. Though the kenku survived oblivion, they returned as mortals, stripped of all the divine gifts their god had bestowed on them: their voices, their wings, and all memories of their past existence. Bearing Tharizdun's curse of oblivion, the kenku were reduced to squat beings that could speak only by mimicking the words of others.
Kenku exist across Wildemount in small numbers. Considered by most to be monsters, they keep to themselves as a result, always longing for something they can neither ask for nor explain. Something in a kenku's mind stirs when it looks to the sky and see birds flying freely—an ancient longing, and a memory trapped within oblivion.