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Owl Pellets

Owl Pellets. Owls. 19 species in North America Predatory birds. Predator Adaptations. Avoiding detection Cryptic coloration Finding prey Vision Auditory Capturing prey. Cryptic Coloration. Western Screech Owl. Long Eared Owl. Great Horned Owl. Silent Flight.

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Owl Pellets

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  1. Owl Pellets

  2. Owls • 19 species in North America • Predatory birds

  3. Predator Adaptations • Avoiding detection • Cryptic coloration • Finding prey • Vision • Auditory • Capturing prey

  4. Cryptic Coloration

  5. Western Screech Owl

  6. Long Eared Owl

  7. Great Horned Owl

  8. Silent Flight

  9. Large Forward Facing Eyes

  10. Prey Eyes

  11. Predator or Prey?

  12. Predator or Prey?

  13. Binocular Vision

  14. Fixed Eyes

  15. Face Disk Funnel Sound

  16. Asymmetrical Ears

  17. Talons…The better to grab you! Zygodactyl toes

  18. Great Horned

  19. Hooked Bill

  20. http://www.youtube.com/watch?v=JVSXQKmL6ZM&feature=related

  21. Barn Owl

  22. Owl Digestive System • No crop • Food storage • Proventriculous • Digestive enzymes & acids • Less acidic than other birds of prey • Ventriculous aka gizzard • Filters bones, fur, teeth

  23. Owl Digestive System

  24. Owl Pellet • Created in gizzard • Stored in proventriculous • Up to 10-12 hours • Regurgitated

  25. http://www.youtube.com/watch?v=yyjIgGVNdV4&feature=related http://www.youtube.com/watch?v=WACVNqi71NA&feature=related

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