. Die Vögel; Handbuch der systematischen Ornithologie. Birds. Fig. 10. Fig. 11 (nach A. Brauer;. ') Sitzungsber. Ges. naturforsch. Freunde Eerlin 1911, S. 175. — Vgl. auch: J. Schäffer, Über die Sperrvorrichtung an den Zehen der Vögel. Zeitschr. für wiss. Zoologie 73, 1903, S. 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 Reichenow, Anton, b. 1847. Stuttgart, F. Enke

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1913