FIGURE D1.

At left, a cropped and enlarged version of the same photograph appearing in Figure C1. The red arrow points to the white saddle on the bird's lower back, with a shape very similar to those in historical Ivorybill photographs from 1935 of a male (center) and female (right). The central portion of the white saddle extends anteriorly leading toward faintly visible dorsal stripes in the photograph at left, similar to the historical photographs and significantly different from those of Red‐headed Woodpeckers in which the central portion of the white saddle does not extend anteriorly. Historical photographs (male: ML72932681; female: ML72932701) by Arthur A. Allen, used by permission of Macaulay Library at the Cornell Lab of Ornithology