. Bulletin of the British Ornithologists Club. Figure 4. Distribution of wing length (mm) in 118 specimens of B. polyosoma and B. poecilochrous. Figure 5. From left to right: darker males of B. polyosoma, B. poecilochrous and B. albicaudatus. Specimens from the collection of the Estacion Biologica de Donana. Photograph by Benjamin 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. Oxford :
. Bulletin of the British Ornithologists Club. Figure 4. Distribution of wing length (mm) in 118 specimens of B. polyosoma and B. poecilochrous. Figure 5. From left to right: darker males of B. polyosoma, B. poecilochrous and B. albicaudatus. Specimens from the collection of the Estacion Biologica de Donana. Photograph by Benjamin 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. Oxford : Clarendon Press
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