How Many Ivory-billed Woodpeckers Are Left In The World?
A few years later, James Tanner began a study of Ivory-bills as part of his Ph. D. dissertation and eventually wrote an in-depth report, funded by the National Audubon Society, that was later published as The Ivory-billed Woodpecker. His report estimated that only 22 to 24 of the birds remained in the United States. Are … Read more