Scientific analysis of old chicken bones found in Chile shows Polynesians reached the continent no later than 1407.
Key new evidence comes from two directions. The first involves revised carbon-dating of an ancient ceremonial headdress used by Southern California's Chumash Indians. The second involves research by two California scientists who suggest that a Chumash word for "sewn-plank canoe" is derived from a Polynesian word for the wood used to construct the same boat.