New York Times article on Sibley's paper

Here:

David A. Sibley, one of the country's top bird experts, said today that the woodpecker that appears fleetingly in a blurry videotape taken in an Arkansas swamp, in a discovery that electrified the world of birding last year, was not an ivory-billed woodpecker after all.

Instead, Mr. Sibley and three colleagues write in the journal Science, the bird is a common pileated woodpecker, and there is no conclusive evidence that the near-mythical ivory bill has escaped extinction.