Osprey

It is like the golden eagle. Its head is a little golden, a little more black. Its bill is a little blackish, somewhat yellow. On its breast, its back, its wings it is completely black [and] gold. Its tail is only flecked with white; it is long, a cubit long. Its legs are slightly green, [slightly] yellow. It is named aitzquauhtli because when it goes flying high, if it wishes to eat, from there it streaks down. When it descends, it goes whirring, it suddenly dives into the water; it seizes whatever it wishes to eat, perhaps a fish. The lagoon water does not damage its eyes.