. Bulletin of the British Ornithologists' Club. . Figure 1. Proximal, palmar and external views of the proximal ends of left humeri of (a) Ichthyornis dispar and (b) Platalea leucorodia. power for the downstroke of the wing in flight. It is usually an elongated prominent flange of bone, stout at the base and thinner towards the edge; but the degree of development varies in different species and in some it is little more than a stout ridge. In all modern birds it projects palmarly from 124. Please note that these images are extracted from scanned page images that may have been digitally enhance
. Bulletin of the British Ornithologists' Club. . Figure 1. Proximal, palmar and external views of the proximal ends of left humeri of (a) Ichthyornis dispar and (b) Platalea leucorodia. power for the downstroke of the wing in flight. It is usually an elongated prominent flange of bone, stout at the base and thinner towards the edge; but the degree of development varies in different species and in some it is little more than a stout ridge. In all modern birds it projects palmarly from 124. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : British Ornithologists' Club
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