Geographical Trends in Trophic Characteristics of Mammal-Eating and Bird-Eating Raptors in Europe and North America

@article{Korpimki1995GeographicalTI,
  title={Geographical Trends in Trophic Characteristics of Mammal-Eating and Bird-Eating Raptors in Europe and North America},
  author={E. Korpim{\"a}ki and C. D. Marti},
  journal={The Auk},
  year={1995},
  volume={112},
  pages={1004-1023}
}
ABSTRAcr.-If dietary opportunism occurs in predators over large geographic areas, trends in the trophic characteristics of predators should be explained largely by the distribution patterns of their prey. We compiled literature information of diet for mammal-eating and bird-eating raptors (diurnal raptors [Falconiformes] and owls [Strigiformes]) in Europe and North America (299 and 300 samples, respectively) and asked: (1) Do latitudinal and longitudinal patterns occur in the food-niche breadth… Expand
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Factors influencing diet variation in a generalist predator across its range distribution
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