Mr Luneau goes to Reuters

From this Reuters article:

In an e-mail to Reuters on Friday, Luneau questioned the Sibley group's hypothesis that the bird in the video was a pileated woodpecker.

"They have not produced a single video of this relatively common bird doing what they describe," Luneau wrote in answer to a request for comment. "In fact, we have studied many (pileated woodpecker) videos and videos of other birds and we have not found a single case that would confirm either of these assertions. I believe that their hypothesis describes an impossibility."