Foraging decisions of North American beaver (Castor canadensis) are shaped by energy constraints and predation risk

  title={Foraging decisions of North American beaver (Castor canadensis) are shaped by energy constraints and predation risk},
  author={Julien A. Salandre and R. J. Beil and John Loehr and Janne Sundell},
  journal={Mammal Research},
Foraging herbivores have to trade-off between energy requirements and predator avoidance. We aimed to study the relative roles of these factors in beavers (Castor canadensis) when foraging on land. We hypothesized that beavers were able to assess the risk of predation by using two main cues: the distance from the water and the presence or absence of predator odors. First, we studied the food selection of beavers in relation to distance from the water in natural settings. The transects were made… 

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