. Bulletin of the British Ornithologists' Club. Figure 4a. Fresh juvenile Matsudaira's Storm Petrel Oceanodroma matsudairae, off Cape St George, New Ireland, Papua New Guinea. August 2007 (Hadoram Shirihai) Figure 3. Comparison of the bill dimensions of Beck's Pseudobulweria becki (top) and Tahiti Petrels P. rostrata. Such distinctive differences in bill size support specific status for becki, but the field observer should bear in mind that these differences are not easily appreciated at sea. Specimens at AMNH, New York (Hadoram Shirihai). Figure 4b. Adult Matsudaira's Storm Petrel Oceanodroma
. Bulletin of the British Ornithologists' Club. Figure 4a. Fresh juvenile Matsudaira's Storm Petrel Oceanodroma matsudairae, off Cape St George, New Ireland, Papua New Guinea. August 2007 (Hadoram Shirihai) Figure 3. Comparison of the bill dimensions of Beck's Pseudobulweria becki (top) and Tahiti Petrels P. rostrata. Such distinctive differences in bill size support specific status for becki, but the field observer should bear in mind that these differences are not easily appreciated at sea. Specimens at AMNH, New York (Hadoram Shirihai). Figure 4b. Adult Matsudaira's Storm Petrel Oceanodroma matsudairae in extensive post-nuptial moult of the tail- and flight-feathers, off New Ireland, Papua New Guinea. August 2007 (Hadoram Shirihai). 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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