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Science 17 March 2006:
Vol. 311. no. 5767, p. 1555
DOI: 10.1126/science.1123581
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Technical Comments

Response to Comment on "Ivory-billed Woodpecker (Campephilus principalis) Persists in Continental North America"

John W. Fitzpatrick,1* Martjan Lammertink,1,2 M. David Luneau, Jr.,3 Tim W. Gallagher,1 Kenneth V. Rosenberg1

Claims that the bird in the Luneau video is a normal pileated woodpecker are based on misrepresentations of a pileated's underwing pattern, interpretation of video artifacts as plumage pattern, and inaccurate models of takeoff and flight behavior. These claims are contradicted by experimental data and fail to explain evidence in the Luneau video of white dorsal plumage, distinctive flight behavior, and a perched woodpecker with white upper parts.

1 Cornell Laboratory of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14850, USA.
2 Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Mauritskade 61, 1092 AD Amsterdam, Netherlands.
3 Department of Engineering Technology and Department of Information Technology, University of Arkansas at Little Rock, Little Rock, AR 72204, USA.

* To whom correspondence should be addressed. E-mail: jwf7{at}cornell.edu

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