The video argues that an eagle devouring a serpent on a cactus was the omen marking the Mexica’s city. According to Mexica tradition, they served Culhuacan as mercenaries and tributaries and were allowed to settle in the Lake Texcoco area. Their account places a conflict involving Culhuacan’s princess before their move to the marshy island around 1325; the early settlement is associated with the San Lorenzo Tenochtitlán archaeological site. In 1428, Tenochtitlan joined Texcoco and Tlacopan to defeat Azcapotzalco—not to stage the princess incident or a coup against Culhuacan.
The Mexica founding of San Lorenzo Tenochtitlán and the eagle-serpent legend

Key facts
- San Lorenzo Tenochtitlán is an archaeological site associated with the early Mexica settlement; its onsite museum is a modern institution.
- According to Mexica tradition, the Mexica served Culhuacan as mercenaries and tributaries and were permitted to settle in the Lake Texcoco area.
- The eagle devouring a serpent on a cactus is a Mexica foundation legend, not a documented prophecy.
- The traditional chronology places the Culhuacan princess episode and the Mexica move to Lake Texcoco around 1325, during the early settlement associated with San Lorenzo Tenochtitlán.
- The Mexica served Culhuacan for decades, not 100–150 years; their later period of tributary service was under Azcapotzalco.
- In 1428, Tenochtitlan allied with Texcoco and Tlacopan to defeat Azcapotzalco; this was not the princess incident or a coup against Culhuacan.
Sources
The Eagle, the Cactus, and the City on the Lake | BirdNotebirdnote.org
... eagle perched on a cactus, devouring a serpent. For years they wandered what is now Mexico in search of that prophecy, until finally, they ...
Coat of arms of Mexico - Wikipediaen.wikipedia.org
The design is rooted in the legend that the Aztec people would know where to build their city once they saw an eagle eating a snake on top of a lake.
The eagle and the snake... - Mexicoloremexicolore.co.uk
Is there a complete list of Mexica/Aztec codices with an absent snake in the eagle's mouth. ... If the Aztec God Quetzalcoatl was the Feather serpent could it be ...
“Eagle on the Cactus Eating a Snake” Myth - EverythingCozumeleverythingcozumel.com
It comes from a myth on the origins of the Aztec people. However, in the myth, the eagle was a falcon and it was not holding a snake!
The Eagle, The Serpent, and The Cactus: Mexico's Legendary Flag ...wanderlustcreatures.com
An eagle perched on a cactus, devouring a snake – it's not just ... The Serpent symbolizes the earth and the challenges that must be overcome.
Myths and Legends of the Aztecsmesoweb.com
According to their legends, the Aztecs once lived on an island called Aztlan. It was from this ancestral home that they derived their name.
What happened to the Culhuas?mexicolore.co.uk
The Aztecs appear to have been the last to leave, with the inevitable result that on their arrival in central Mexico the best land had already been taken.
History of the Aztecssearchinginhistory.blogspot.com
Their brutality though allowed them to work as mercenaries for other tribes. In the early 1300's, they served the Culhuacans. killed the ...
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