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Initial mass of avian eggs: Comparison between measured and calculated values

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Summary

It had previously been demonstrated that by weighing an egg after replacing the air cell with water the initial egg mass at the time of laying is obtained during any stage of incubation. The average egg mass ofSchönwetter (1960–84) compared with those obtained by weighing fresh eggs of the same species after replacement of the air cell with water gives an excellent agreement, as shown in the regression curve, with a slope of 1.0.

Zusammenfassung

Das Wägen eines Vogeleies, dessen Luftkammer mit Wasser gefüllt worden ist, gibt sein Frischgewicht zum Zeitpunkt des Legens wieder. So kann auch nachträglich auf einfache Weise das Frischgewicht eines Vogeleies bestimmt werden. Die durchschnittlichen Frischvollgewichte vonSchönwetter (1960–84) stimmen auffallend gut mit unseren Wägungen überein, wie die berechnete Regressionsgerade (Steigung=1.0) beweist. Letztere stützt sich einerseits auf 97 an 1164 Eiern ermittelten Durchschnittsgewichte von 68 Arten (9 Ordnungen) der verschiedensten Faunengebiete und anderseits auf 7616Schönwetters Berechnungen zugrundeliegende Eiern derselben Arten.

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Authors and Affiliations

  1. Department of Physiology, State University of New York at Buffalo, 14214, Buffalo, New York, USA

    Hermann Rahn, Charles V. Paganelli & Paul R. Sotherland

Authors
  1. Hermann Rahn
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  2. Charles V. Paganelli
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  3. Paul R. Sotherland
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Rahn, H., Paganelli, C.V. & Sotherland, P.R. Initial mass of avian eggs: Comparison between measured and calculated values. J Ornithol 126, 210–212 (1985). https://doi.org/10.1007/BF01642890

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