Owl Pellets

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Owl Pellets
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Owls

• 19 species in North America
• Predatory birds

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Predator Adaptations

• Avoiding detection
• Cryptic coloration
• Finding prey
• Vision
• Auditory
• Capturing prey

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Cryptic Coloration
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Western Screech Owl
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Long Eared Owl
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Great Horned Owl
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Silent Flight
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Large Forward Facing Eyes
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Prey Eyes
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Predator or Prey?
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Predator or Prey?
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Binocular Vision
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Fixed Eyes
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Face Disk Funnel Sound
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Asymmetrical Ears
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TalonsThe better to grab you!
Zygodactyl toes
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Great Horned
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Hooked Bill
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http//www.youtube.com/watch?vJVSXQKmL6ZMfeature
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Barn Owl
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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

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Owl Digestive System
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Owl Pellet

• Created in gizzard
• Stored in proventriculous
• Up to 10-12 hours
• Regurgitated

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http//www.youtube.com/watch?vyyjIgGVNdV4feature
related
http//www.youtube.com/watch?vWACVNqi71NAfeature
related
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