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Pigeon Dissection
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Columbaformes
Family: Columbidae
Genus: Columba
Species: livia
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Bird Skeleton: Hollow Bones
The hollow bones are honeycombed with air spaces and strengthened by crisscrossing struts. The number of hollow bones varies from species to species, though large gliding and soaring birds tend to have the most.
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Lets get some background information
first!
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Pigeon Leg
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Chicken legsa.k.a. “the drumstick”. This is the upper part of the leg containing the femur.
This is the lower part of the leg containing the fibula (small bone) and the tibia (the shin bone).
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• Quadrate bone (1)
•
• Keeled sternum and furcula (2 & 3)
•
• Uncinate processes (4)
•
• Synsacrum and pygostyle (5 & 6)
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Feathers• Feathers are light but very strong, and they are
flexible but very tough. • Feathers do not grow all over the bird.
Feathers grow in certain areas called feather tracks. In between the feather tracks are down feathers. This keeps down the body weight.
Feathers are made of a tough and flexible material called "keratin". There is a spine down the middle, called the shaft, which is hollow. There are vanes are on the two halves of the feather. They are made of thousands of branches called barbs. Because there are many spaces between these barbs, a feather has as much air as matter.
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• Not all birds have all the types of feathers. It depends on what type of bird it is.
• The tail of the bird plays a big role during flight. The tail acts as the rudder, balancing and steering the bird. The tail also helps the bird in stopping. The tail is turned downward and acts like a brake.
• Feathers protect the bird's skin and insulates it. Feathers can be fluffed up in the winter or squeezed down in the summer. Feathers are also used to line nests.
• The color of the feathers is important in mating. • Birds can see color. Most other mammals cannot.
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• Feathers can be divided into 6 categories:
Filoplume feathers Bristle feathers Powder-down feathers
Contour feathers Semiplume feathers Down feathers
primaries - the main flight feathers on the wings (they are located on lower [outer] parts of the wings). scapulars - feathers on the shoulder (also called lesser secondary coverts).
secondaries - the smaller flight feathers on the wings - they are on the upper part of the wings (above the primaries).
tail feathers - flight feathers at the end of the bird (used for steering).
You will ID these 3 on your pigeon:
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• A bird's survival depends upon the condition of its feathers. Birds take a lot of time caring for their feathers. This is called preening. They use their feet and beaks to arrange their feathers. They nibble each feather from the base of the tip.
•Birds have between 1,000 and 25,000 feathers.
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How many feathers?
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Video clips of dissection
• http://llabiology.blogspot.com/2008/05/biology-i-bird-video.html (1:32)
• http://www.youtube.com/watch?v=X4YVpK4mgKY&feature=related (approx 4 min)
• http://www.youtube.com/watch?v=ja7eVvqkAM8 (approx. 4 min)
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Circulatory System
Generally birds have hearts larger and ones that beat faster than mammals. The human heart pulse rate at rest averages 72 beats per minute. The House Sparrow's heart pulse rate at rest averages 460 beats per minute. In the Ruby-throated Hummingbird pulse rate at rest is 615! WOW!
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Identify the following anatomical structures:• Muscles
pectoralis major supracoracoideus
• Teacher’s Initials: __________
• Digestive System esophagus crop proventriculus gizzard small intestine large intestine caeca cloaca liver pancreas
• Teacher’s Initials: __________
• Sensory & Nervous Systems Brain: cerebral hemispheres cerebellum
optic lobe medulla
• Teacher’s Initials: __________
• Circulatory System heart right & left atria right & left ventricles
• Teacher’s Initials: __________
• Respiratory system• trachea
right & left lungs air sacs
• Teacher’s Initials: __________
• Urogenital & Endocrine Systems kidneys testes ovary oviduct
• Teacher’s Initials: __________
• Your names: _______________________
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Respiratory system
Ounce for ounce, a bird in flight requires more energy than a terrestrial mammal. Especially when migrating, birds fly at altitudes where oxygen is in such short supply that no mammal could possibly survive.
The air sacs fill a large proportion of the chest and abdominal cavity, and also connect to the air spaces in the bones.
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Bird Structure Key for the following ID slides
Structures Structures Structures
1. Large Intestine 11. Tail Feathers 21. Pectoralis
2. Caeca 12. Crop 22. Supracoracoidius
3. Ovary 13. Esophagus 23. Crop
4. Gizzard 14. Contour Feathers 24. Glottis
5. Testes 15. Down Feathers 25. Palatine Folds
6. Pancreas 16. Allula 26. Tongue
7. Duodenum 17. Primary Feathers27. Posterior Opening
of Air Passage
8. Lungs18. Secondary
Feathers28. Large Intestine
9. Heart 19. Cloaca 29. Kidneys
10. Liver 20. Small Intestine 30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers
19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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Bird Female Anatomy (#3)
1. Large Intestine2. Caeca3. Ovary4. Gizzard5. Testes 6. Pancreas7. Duodenum8. Lungs9. Heart10. Liver11. Tail Feathers12. Crop13. Esophagus14. Contour Feathers15. Down Feathers16. Allula17. Primary Feathers18. Secondary Feathers19. Cloaca20. Small Intestine21. Pectoralis22. Supracoracoidius23. Crop24. Glottis25. Palatine Folds26. Tongue27. Posterior Opening of Air Passage 28. Large Intestine29. Kidneys30. Proventriculus
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Female
This is where the developing egg will enter
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Female
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Male
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Male
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That’s All
Folks!