The Tuyango is a carnivorous swamp bird from Argentinian folklore. The Mocoví know it as Tagänogók, while “tuyango” is of Guaraní origin. These birds are currently believed to have been hunted to extinction.
A tuyango looks a lot like a rhea, but it has a distinctive yellow neck. It preys on humans, which it kills and drags back to its lair to devour.
The hawk had a particular vendetta against the tuyangos, and sought to avenge their cannibalism of humans. One tuyango returned to his home with two dead men only to find his four children clubbed to death. The tuyango cried, ejee, ejee, before heading out with his mate to find the hawk. But the hawk asked for fire, and he flew in and out of the smoke until the tuyangos were exhausted and thoroughly confused; only then did he club and kill them. He returned to widespread joy; when his daughter told him “Daddy, a cannibal bird is coming”, he reassured her that he had already killed the tuyango, and all were happy.
Cipolletti, M. S.; Guevara, J.; Lehmann-Nitsche, R.; Terán, B. R. D.; and Tomasini, J. A.; Wilbert, J. and Simoneau, K. eds. (1988) Folk Literature of the Mocoví Indians. UCLA Latin American Center Publications, University of California, Los Angeles.