quetzalaztatzontli.

quetzalaztatzontli, çā moca quetzalli, motquitica quetzalli = the heron-feather headdress full of quetzal feathers, entirely of quetzal feathers
(central Mexico, sixteenth century)
James Lockhart, We People Here: Nahuatl Accounts of the Conquest of Mexico, Repertorium Columbianum v. 1 (Los Angeles: UCLA Center for Medieval and Renaissance Studies, 1993), 66.