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  • There is growing evidence that birds are able to discriminate different types of nest intruders and adjust their nest defence behaviour according to intruder dangerousness and distance from the nest (the dynamic risk assessment hypothesis). Here, we tested whether birds' decisions about nest defence may additionally be affected by an increasing familiarity with a particular nest predator. We tested nest defence responses of great reed warblers Acrocephalus arundinaceu to a nest predator, the little bittern Ixobrychus minutus. Great reed warbler nests located close (B7 m) to synchronously breeding little bitterns were ''neighbour'', other nests were ''solitary''. Great reed warbler specific aggression towards a little bittern dummy was much lower (*5-times) at neighbour than solitary nests. In contrast, generalised responses to a control innocuous intruder (the turtle dove, Streptopelia turtur) were statistically identical at neighbour and solitary nests. These patterns are in line with dynamic risk assessment hypothesis. We hypothesise that decreased great reed warbler aggression at neighbour nests also represents a specific behavioural adaptation to nesting in association with the little bittern. Little bitterns breeding closer to great reed warblers showed decreased risks of failure due to predation. However, further research is needed to experimentally test the causal links behind these patterns
  • There is growing evidence that birds are able to discriminate different types of nest intruders and adjust their nest defence behaviour according to intruder dangerousness and distance from the nest (the dynamic risk assessment hypothesis). Here, we tested whether birds' decisions about nest defence may additionally be affected by an increasing familiarity with a particular nest predator. We tested nest defence responses of great reed warblers Acrocephalus arundinaceu to a nest predator, the little bittern Ixobrychus minutus. Great reed warbler nests located close (B7 m) to synchronously breeding little bitterns were ''neighbour'', other nests were ''solitary''. Great reed warbler specific aggression towards a little bittern dummy was much lower (*5-times) at neighbour than solitary nests. In contrast, generalised responses to a control innocuous intruder (the turtle dove, Streptopelia turtur) were statistically identical at neighbour and solitary nests. These patterns are in line with dynamic risk assessment hypothesis. We hypothesise that decreased great reed warbler aggression at neighbour nests also represents a specific behavioural adaptation to nesting in association with the little bittern. Little bitterns breeding closer to great reed warblers showed decreased risks of failure due to predation. However, further research is needed to experimentally test the causal links behind these patterns (en)
Title
  • Dynamic risk assessment: does a nearby breeding nest predator affect nest defence of its potential victim?
  • Dynamic risk assessment: does a nearby breeding nest predator affect nest defence of its potential victim? (en)
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  • Dynamic risk assessment: does a nearby breeding nest predator affect nest defence of its potential victim?
  • Dynamic risk assessment: does a nearby breeding nest predator affect nest defence of its potential victim? (en)
skos:notation
  • RIV/61989592:15310/14:33153416!RIV15-MSM-15310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GAP506/12/2404)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 12676
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/14:33153416
http://linked.open...riv/jazykVysledku
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  • Acrocephalus arundinaceus, Ixobrychus minutus, nest predation, nesting association (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • JP - Japonsko
http://linked.open...ontrolniKodProRIV
  • [6FDC8BF13C08]
http://linked.open...i/riv/nazevZdroje
  • Journal of Ethology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 32
http://linked.open...iv/tvurceVysledku
  • Grim, Tomáš
  • Trnka, Alfréd
http://linked.open...ain/vavai/riv/wos
  • 000334521500006
issn
  • 0289-0771
number of pages
http://bibframe.org/vocab/doi
  • 10.1007/s10164-014-0400-x
http://localhost/t...ganizacniJednotka
  • 15310
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