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Jungvögel sterben im harten Winter zuerst: Winterverluste beim Austernfischer,Haematopus ostralegus

Jurenile birds die first: winter losses among Oystercatchers,Haematopus ostralegus

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Zusammenfassung

Nach einer 30tägigen Frostperiode im Februar/März 1986 konnten auf der niederländischen Wattenmeerinsel Texel 86 tote Austernfischer untersucht werden. 67% aller Totfunde wiesen Deformationen an Schnäbeln und Beinen auf. 60,7% waren Vögel im ersten Lebensjahr. Der Anteil adulter betrug 8,3%. Die Totfunde wiesen ein Untergewicht von 36% auf. Insgesamt dürften 5–6% des Winterbestandes auf Texel dem Frost zum Opfer gefallen sein.

Summary

A spell of frost of 30 days in February/March 1986 caused a high mortality (5–6%) among wintering Oystercatchers on Texel, NL. Anatomical deformations were found in 67% of the frost victims, especially on bill and legs. 60,7% of the frost victims were younger than 1 year and only 8,3% were adults. The mean weight of the 86 victims was about 36% less than the mean normal winter-weights.

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Authors and Affiliations

  1. Fachbereich Biologie/Chemie der Universität Osnabrück, Postfach 44 69, D4500, Osnabrück, Germany

    Martin Stock, Jörg Strotmann & Hilke Witte

  2. Fachbereich Biologie der Universität Kiel, Ohlshausenstr. 40-60, D-2300, Kiel, Germany

    Georg Nehls

Authors
  1. Martin Stock
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  2. Jörg Strotmann
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  3. Hilke Witte
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  4. Georg Nehls
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Stock, M., Strotmann, J., Witte, H. et al. Jungvögel sterben im harten Winter zuerst: Winterverluste beim Austernfischer,Haematopus ostralegus . J Ornithol 128, 325–331 (1987). https://doi.org/10.1007/BF01640302

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  • DOI: https://doi.org/10.1007/BF01640302

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