Common ravens raid arctic fox food caches

  title={Common ravens raid arctic fox food caches},
  author={Vincent Careau and Nicolas Lecomte and Jean‐François Giroux and Dominique Berteaux},
  journal={Journal of Ethology},
Cache recovery is critical for evolution of hoarding behaviour, because the energy invested in caching may be lost if consumers other than the hoarders benefit from the cached food. By raiding food caches, animals may exploit the caching habits of others, that should respond by actively defending their caches. The arctic fox (Alopex lagopus) is the main predator of lemmings and goose eggs in the Canadian High Arctic and stores much of its prey in the ground. Common ravens (Corvus corax) are not… 
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Food caching by red foxes and some other carnivores.
  • D. Macdonald
  • Environmental Science
    Zeitschrift fur Tierpsychologie
  • 1976
The results demonstrate the fox's ability to rediscover its caches and shed light on the adaptive significance of the behaviour, which is then dsicussed in the context of food safeguarding by other carnivores.
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Social foraging allows individuals to scrounge, i.e. to exploit the food others have made available. The conditions promoting scrounging as an alternative foraging tactic have yet received limited
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This study provides strong support for short-term, positive indirect effects and long- term, negative indirect effects of lemming populations on arctic-nesting geese through the behavioural and numerical responses of shared predators.
Trophic Interactions in a High Arctic Snow Goose Colony1
It is concluded that, contrary to the exploitation ecosystem hypothesis, both the plant/herbivore and predator/prey interactions are significant in this arctic community.