Technical Comments

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

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Science  17 Mar 2006:
Vol. 311, Issue 5767, pp. 1555
DOI: 10.1126/science.1122778
Fig. 3.

Video frames on left, with interpretive sketches by D. Sibley on the right. (A) Frame 350 showing extensive black on the secondary feathers along the trailing edge of the elevated left wing. (B) Frame 366.7 showing the ventral surface of the wing and a broad black band curving across the wingtip and down toward the trailing edge of the wing. (C) Frame 300 showing both wings moving down rapidly, near the bottom of the downstroke, with the brightest white visible on the outer wing just inside the black wingtips (compare also Fig. 2F). All three features are typical of a pileated woodpecker, and all are inconsistent with the expected appearance of an ivory-billed woodpecker.