part of the plumage of the yellow headed parrot, called the toztli Gran Diccionario Náhuatl, citing A. Wimmer 2004, https://gdn.iib.unam.mx/diccionario/toztlapalcatl. Translated here to English by Stephanie Wood.
the color yellow Juan José Batalla Rosado, "Análisis de elementos gráficos de contenido occidental: el caso de los antroponimos nahuas," in El Arte de escribir. El centro de México: del postclásico al siglo XVII (2018), 107.
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 2 -- The Ceremonies, no. 14, Part III, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1951), 87.