White-faced Ibis (see Hunn in attestations)
Ā-CĀCĀLŌ-TL, literally, “water raven,” White-faced Ibis (Plegadis chihi). The Florentine Codex, 43, gives: Acacalotl: “It is black – a waterfowl, an eater of water life. The legs are long, very long, black; it has a sharp curved bill.” Martin del Campo identified this as the Jabiru (Jabiru mycteria) but noted that Santamaría indicated that the term acacalote applied to Plegadis guarauna, an obsolete Latin name for the White-faced Ibis. This latter identification is far more likely than the Jabiru, as the Jabiru nests rarely in a restricted area of the coastal marshes from eastern Tabasco east, while the White-faced Ibis is a fairly common nesting species across the highlands of central Mexico (Howell and Webb). Also, the ibis fits the description much more closely than the Jabiru, in particular, its curved beak.