Conclusions
The video clip shot by David Luneau on 25 April 2004 provides a
4.5-second glimpse of a large woodpecker flying away from his
approaching canoe. Although resolution of the bird is less than ideal,
this video clip does contain a substantial amount of information when
enlarged and put through a detailed, frame-by-frame examination. A
number of videos of known Pileated Woodpeckers are available for
comparison and a careful reenactment experiment was carried out. Taken
together, examination of these videos convinces us unequivocally that
the hypothesis that the bird in the video is a normal Pileated
Woodpecker can be eliminated. Moreover, several traits of the bird in
the Luneau video--size, wing shape, flight pattern, wingbeat frequency,
absence of
observations--also allow us to eliminate the hypothesis of a leucistic
(“piebald”) Pileated Woodpecker having mostly white wings and a white
back. Indeed, if it were a piebald Pileated Woodpecker, we would have
gotten to know it quite well over the past two years considering the
small home ranges of southern Pileated Woodpeckers and because of all
the time spent in the region where this video was shot. A few
molting pileateds showing some extra white on the wing have been
spotted in the Big Woods region of Arkansas. Searchers also found a
leucistic Pileated Woodpecker in February 2006, which was obviously
distinctive from an ivory-bill (see "White Pileated Woodpecker Documented in the Big Woods"). We know of no photographs
or specimens of Pileated Woodpeckers from anywhere in their range that
exhibit extensive, symmetrical white plumage patterns approaching the
bird in the Luneau video.
As summarized below, traits of the bird in the Luneau video are entirely consistent with its being an Ivory-billed Woodpecker. We remain convinced that this video provides documentary evidence confirming the numerous sight records of Ivory-billed Woodpecker in the Cache River National Wildlife Refuge between February 2004 and February 2005.
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