First Chickens in Americas Were Brought From Polynesia By JOHN NOBLE WILFORD Why did the chicken cross the Pacific Ocean? To get to the other side, in South America. How? By Polynesian canoes, which apparently arrived at least 100 years before Europeans settled the continent. That is the conclusion of an international research team, which reported yesterday that it had found “the first unequivocal evidence for a pre-European introduction of chickens to South America,” or presumably anywhere in the New World. The researchers said that bones buried on the South American coast were from chickens that lived between 1304 and...