. Bonner zoologische Monographien. Zoology. Abb. 30—33 a: Brütendes SG. 30: locker brütend, Rückengefieder im Niveau des Nestrandes. 31: bei Alarm sich drückend. 32: beim „Strampelwenden". 33 a: beim 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 Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig

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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology