Figure 1

Fig. 1. Luneau video field 33.3 (A) shows the first major appearance of the woodpecker's right wing to the left of the tupelo trunk. The white triangle has black above and a small black spot between the lower edge and the trunk. We interpret this as a lateral view of the opening wing of an ivory-billed woodpecker as the bird begins to turn away from the approaching observers, matched here by a montage (B) of a specimen's wing (C) superimposed behind a tupelo trunk. Sibley et al. (2) propose, instead, that the pattern is a vertically extended underwing of a pileated woodpecker (D), but comparison with a pileated woodpecker wing specimen at such an angle (E) reveals flaws in their diagram. A pileated woodpecker wing would show a broad black border entirely encircling the white and comprising 60 to 70% of the wing area. If the wing were tilting away from or toward the viewer, thus showing less black, the white underwing also would be extremely narrow (F). Moreover, the position of the tail and body proposed by Sibley et al. (2) in this field are incompatible with the sequence of movement observed in adjacent frames. [View Larger Version of this Image (358K JPEG file)]

 

[PowerPoint download feature is available to paid individual subscribers and to registered users at subscribing institutions (register for free).]

You may download the image(s) above for non-profit educational presentation use only, provided no modifications are made to the content. Any use, publication, or distribution of the image(s) beyond that permitted in the sentence above or beyond that allowed by the "Fair Use" limitations (sections 107 and 108) of the US Copyright law requires the prior written permission of AAAS. This permission does not apply to images that are credited to non-AAAS sources. For images credited to non-AAAS entities, you will need to obtain permission from the entity listed in the legend or credit line before making any use of the image(s).

To Advertise   |   Find Products