You must find sources of life before you can take on Quetzalcoatl
Final Fantasy 7 Rebirth Quetzalcoatl Talon
One of the early side quests you'll be tasked with in Final Fantasy 7 Rebirth is "Where the Wind Blows," where you must assemble a missing piece needed to fix a windmill. You must find a specific transmuter chip to build the part and then take down a specific devil, Quetzalcoatl, to get the materials for the part.
Below we describe where to find Quetzalcoatl in Final Fantasy 7 Rebirth and how to get the Quetzalcoatl Talon.
Quetzalcoatl Talon comes as I said from Quetzalcoatl. Quetzalcoatl is a classified intel battle encounter, meaning you need to find some life sources in the grassland area before it appears.