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Class Aves: Feathers

Class Aves: Feathers. 25. BIRDS AND REPTILES. http://www.csicop.org/uploads/images/si/ph21.gif. 26. 27. Evolution of Birds. Fig. 2-6 in Gill 2007. Longisquama (Thecodont Reptile). Triassic. Compsognathus (Theropod Dinosaur). Jurassic. 61. ORIGIN OF FEATHERS: THEROPOD DINOSAURS.

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Class Aves: Feathers

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  1. Class Aves: Feathers 25

  2. BIRDS AND REPTILES http://www.csicop.org/uploads/images/si/ph21.gif 26 27

  3. Evolution of Birds Fig. 2-6 in Gill 2007

  4. Longisquama (Thecodont Reptile) Triassic

  5. Compsognathus (Theropod Dinosaur) Jurassic 61

  6. ORIGIN OF FEATHERS: THEROPOD DINOSAURS Sinosauropteryx, China, early Cretaceous

  7. ORIGIN OF FEATHERS: THEROPOD DINOSAURS Caudipteryx, China, early Cretaceous

  8. ORIGIN OF FEATHERS: BIRDS Archaeopteryx

  9. Feathers 2

  10. WHY?

  11. Why? 52

  12. Keratin Alpha-Keratin Beta-Keratin

  13. Keratin Alpha-Keratin Beta-Keratin

  14. Pterylae Fig. 3-1 in Podulka et al. 2004

  15. Apteria 22 23

  16. Cassin’s Finch 24

  17. Variation in Apteria Occurrence 20 21

  18. Feather Structure (Outer Vane, Inner Vane, Shaft) 1

  19. Feather Vane Symmetry Fig. 3-3 in Podulka et al. 2004

  20. Vane Symmetry 14

  21. Feather Vane Symmetry Guam Rail

  22. Vane Symmetry 60 Archaeopteryx (Jurassic Period) 3

  23. Shaft 1

  24. Shaft: Calamus (Quill) Proctor and Lynch 1993, p. 83

  25. Shaft: Rachis Proctor and Lynch 1993, p. 83

  26. Vane Structure: Barbs Velcro (Barb = a) Ramus, b) Barbules, c) Barbicels = Hooklet) Fig. 4-1 in Gill 2007

  27. Feather Maintenance Preening

  28. Feather Types Contour Feathers http://askabiologist.asu.edu/research/bird_feathers/images/feather_types.jpg

  29. I) Contour Feathers Fig. 1-10 in Podulka et al. 2004 1

  30. Contour Feather Adaptations

  31. Contour Feathers: Flight

  32. Contour Feathers: Remiges, Rectrices Fig. 3-7 in Podulka et al. 2004

  33. Regions of Contour Feather Vane Pennaceous, Plumulaceous

  34. Silent Owl Flight Fig. 3-12 in Podulka et al. 2004

  35. Silent Owl Flight http://drawingthemotmot.files.wordpress.com/2009/02/img_5589.jpg

  36. Contour Feathers: Breeding Plumage

  37. Contour Feathers: Afterfeather 9

  38. Contour Feather Structure Shaft Vane Symmetric Vane Asymmetric Vane Calamus Aftershaft = Afterfeather Rachis Pennaceous Vane Plumulaceous Vane Barb Ramus Barbules Barbicels = Hooklets 1

  39. II) Down Feathers 29 30

  40. a) Natal Down Feathers 32 31

  41. “Naked as a Jaybird” 34 33

  42. b) Body Down Feathers 39 30 40 38

  43. Natal Down, Body Down 43

  44. 37 36 35

  45. III) Semiplume Feathers 45

  46. III) Semiplume Feathers

  47. 1 IV) 46

  48. V) Powder Down Feathers 48 47 49

  49. VI) Bristles 50) Fig. 3-14 in Podulka et al. 2004 51)

  50. Contour Down a) Natal Down b) Body Down Semiplume Filoplume Powder Down Bristles Feather Types:

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