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Parental behaviour and family proximity as key to gosling survival in Greylag Geese (Anser anser)

Research output: Contribution to journalArticle

Author(s)

Georgine Szipl, Alina Loth, Claudia A. F. Wascher, Josef Hemetsberger, Kurt Kotrschal, Didone Frigerio

School/Research organisations

Abstract

Reproductive success in monogamous species is generally affected by both behavioural and hormonal fine-tuning between pair partners. Vigilance, defence and brooding of offspring are among the main parental investments, and often the sexes adopt different roles. In the present study, we investigate how sex differences in parental behaviour and family proximity in the socially monogamous Greylag Goose (Anser anser) affect gosling survival. During the reproductive season in spring 2013, we recorded the behaviour of 18 pairs with offspring and gosling survival in a semi-tame, long-term monitored, and individually marked flock of Greylag Geese in Grünau, Austria. We found that behavioural role differentiation between the parents varied with developmental phase, and thus with gosling age. Especially during the first 10 days after hatching, females were foraging more frequently than males, which were more vigilant and aggressive towards other flock members. Such differences between the sexes levelled out 20 to 30 days after hatching. In general, females stayed in closer proximity to their offspring than males. Gosling survival was high when the parents were relatively aggressive and emphasized vigilance rather than foraging behaviour. Hence, we show a direct link between pair partners’ quality of parental investment and gosling survival.
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Details

Original languageEnglish
Number of pages11
JournalJournal of Ornithology
VolumeFirst Online
Early online date20 Feb 2019
DOIs
Publication statusE-pub ahead of print - 20 Feb 2019

    Research areas

  • Parental behaviour, Gosling survival, Anser anser

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