As reported around the world, the ivory-billed woodpecker (Campephilus principalis), last known to exist in 1944, was sighted in eastern Arkansas in 2004. The sighting prompted a massive (and secret) follow-up search in 2005 of a sixteen-square-mile area of Arkansas forest. When the bird was confirmed to exist, the discovery spawned international headlines, an article in the journal Science, and a book titled The Grail Bird: Hot on the Trail of the Ivory-billed Woodpecker. While the search for additional evidence of the woodpecker continues, the investigation is instructive for what it did not find: the alleged and elusive Bigfoot. The...