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Vigilance and predation of a forest-living bird species depend on large-scale habitat structure

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  • Michael Griesser
  • Magdalena Nystrand

Abstract

Prey often use visual cues to detect predators, and consequently, many studies have assessed the effect of small-scale habitat structure on prey antipredator vigilance. This scale may be inappropriate to assess the link between habitat structure and vigilance, however, because visually hunting predators often detect prey from several hundred meters away. As a result, large-scale habitat structure could affect both the hunting decisions of predators and antipredator behaviors of prey. Here we investigated the effect of small- and large-scale habitat structure, as well as group composition (kinship) on vigilance allocation of breeders in the Siberian jay Perisoreus infaustus. Vigilance had an antipredator function and was increased after exposure to a predator model. Small-scale habitat structure did not affect vigilance rates, however, habitat structure of the whole territory, measured as the proportion of visual cover, affected vigilance depending on group composition. Breeders with retained offspring (kin) in their group were more vigilant in managed open territories than on pristine dense territories, whereas breeders without kin in their groups did not adjust vigilance rates in relation to large-scaled habitat structure. Earlier studies have revealed that hawks, the main predators of jays, primarily kill non-kin group members living in groups inhabiting open territories. Therefore, we suggest that breeders adjusted their vigilance depending on the habitat-specific predation risk to protect their retained offspring. This demonstrates that large-scale habitat structure affects predator--prey interactions and is crucial to understanding spatial variation in antipredator allocation and mortality. Copyright 2009, Oxford University Press.

Suggested Citation

  • Michael Griesser & Magdalena Nystrand, 2009. "Vigilance and predation of a forest-living bird species depend on large-scale habitat structure," Behavioral Ecology, International Society for Behavioral Ecology, vol. 20(4), pages 709-715.
  • Handle: RePEc:oup:beheco:v:20:y:2009:i:4:p:709-715
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    File URL: http://hdl.handle.net/10.1093/beheco/arp045
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    Cited by:

    1. Savannah L Bartel & John C Kilgo, 2023. "White-tailed deer responses to acoustic predator cues are contingent upon past land use and contemporary fire regime," Behavioral Ecology, International Society for Behavioral Ecology, vol. 34(6), pages 1013-1022.
    2. Nicole A. Schneider & Michael Griesser, 2013. "Incubating females use dynamic risk assessment to evaluate the risk posed by different predators," Behavioral Ecology, International Society for Behavioral Ecology, vol. 24(1), pages 47-52.
    3. Max Radvan & Anthony R Rendall & Michael A Weston, 2023. "The habitat connectivity hypothesis of escape in urban woodland birds," Behavioral Ecology, International Society for Behavioral Ecology, vol. 34(2), pages 297-305.

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