Notes
Slide Show
Outline
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Owl Feet and Hunting Methods
  • Art McMorris
  • DVOC
  • March 3, 2005
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Size of Owl Prey
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Winter Hunting Strategies of Small Northern Owls
  • Boreal Owl
    • Mature spruce-fir forest:  no crust
  • Northern Saw-whet Owl
    • Less northern; semi-migratory
    • Mature forest, dense vegetation:  no crust
    • Favors areas with some south-facing slopes
  • Northern Hawk Owl
    • Mature forest:  no crust
    • Infrequent snow plunger
    • Shifts significantly to birds in winter
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Summary
  • Great Gray Owl
    • Small feet
    • Specialized for plunging through crust
    • Small prey
  • Other Large Northern Owls
    • Larger feet
    • Do not plunge through crust
    • Larger choice of prey type and size
  • Other Small-Footed Northern Owls
    • Small prey …but
    • Don’t plunge through crust
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Acknowledgements
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References