Owl pellet pre lab
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OWL PELLET PRE-LAB. OWL PELLETS. Owl pellets are masses of bone , teeth , hair , feathers , and exoskeletons of various animals preyed upon by raptors. OWL PELLETS. These pellets are the undigestable parts of an owl’s meal that the bird will then regurgitate. OWL PELLET.

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OWL PELLET PRE-LAB

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Owl pellet pre lab

OWL PELLET PRE-LAB


Owl pellets

OWL PELLETS

  • Owl pellets are masses of bone, teeth, hair, feathers, and exoskeletons of various animals preyed upon by raptors.


Owl pellets1

OWL PELLETS

  • These pellets are the undigestable parts of an owl’s meal that the bird will then regurgitate.


Owl pellet

OWL PELLET

  • The owl will first capture the prey before ripping them apart with his sharp beak and swallowing large chunks.


Owl pellet1

OWL PELLET

  • These chunks make their way down the esophagus into the proventriculus, which secretes juices onto the food.

  • This mass then moves to the gizzard, which separates what the owl can digest from what he can not.


Owl pellet2

OWL PELLET

  • The digestable portion continues on through the digestive tract.

  • The undigestable part forms into a round pellet.

  • This pellet moves back into the proventriculus where it will stay for many hours.


Owl pellet3

OWL PELLET

  • Before the owl can eat again, he must regurgitate the pellet.

  • The owl appears to be in great pain and seems like he can not breathe during this process, but once the pellet is out, he is okay.

  • YouTube Video: Baby owl ejects pellet


Owl pellet4

OWL PELLET

  • Looking into the pellet can give some idea of what the owl has eaten.

  • Pellets also indicate where an owl’s nest has been located.


Owl pellet5

OWL PELLET

  • Owls are a type of raptor.

  • These are also called birds of prey.

  • Some other raptors are falcons, vultures, hawks, and eagles.


Owl pellet6

OWL PELLET

  • Barn owls are very common and pellets are numerous.

  • A barn owl can usually be found in many habitats, but commonly in open woods.

  • They usually roost during the day in tree hollows.


Owl pellet7

OWL PELLET

  • Barn owls usually eat small ground mammals such as voles, shrews, and mice.

  • These animals usually eat things like insects, nuts and berries, and sometimes worms.


Owl pellet8

OWL PELLET

  • Owls differ from other birds of prey in how they eat.


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OWL PELLET

  • For instance, eagles soar in the sky looking for prey.


Owl pellet10

OWL PELLET

  • Once spotted, it will attack with its talons and peck with the beak until the prey is dead.

  • The eagle then rips out the insides, eats, and leaves.


Owl pellet11

OWL PELLET

  • An owl will swallow its prey whole.


Owl pellet12

OWL PELLET

  • Owls have many adaptations that make them incredible hunters.


Owl pellet13

OWL PELLET

  • They have large, forward-facing eyes that widen inside the skull, allowing the retinas to almost touch.


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OWL PELLET

  • Their retinas are so advanced that owls can catch prey in total darkness.

  • Owls also have very sensitive ear openings.

  • They can also rotate their heads about 270 degrees, giving them a wide range of vision.


Helpful links

Helpful Links

  • Virtual Owl Pellet Dissection: http://www.kidwings.com/owlpellets/flash/v4/index.htm

  • Owl Pellets Song: http://www.youtube.com/watch?v=FENowCc-A8M&feature=related

  • Owl Pellet Dissection Video: http://www.youtube.com/watch?v=yPm689pxjV4

  • Owl Pellet Lab Directions Online: http://crescentok.com/staff/jaskew/isr/biology/bpellet.htm

  • Dirty Jobs: Owl Vomit Collector: http://dsc.discovery.com/videos/dirty-jobs-owl-vomit-collector.html


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