Abstract
Our detailed analysis [D. A. Sibley et al. , “Comment on ‘Ivory-billed woodpecker ( Campephilus principalis ) persists in continental North America,'” Technical Comments, 17 Mar. 2006, [www.sciencemag.org/cgi/content/full/311/5767/1555a][1]] showed that a bird videotaped in Arkansas ([1][2])
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