The turkey out of the Americas: two indigenous domestications, one of which fed the world

The only large livestock animal the Americas domesticated was domesticated twice, independently, by indigenous peoples - once in Mesoamerica and once in the US Southwest - and ancient DNA says the two stocks never mixed. The bird Spaniards carried to Europe in the early sixteenth century, and which came back to North America as the commercial turkey, is the Mesoamerican one. The earliest Spanish page describing it records it being handed over on Cozumel in 1518.