1. Feather Morphology Advanced Biology – Spring 2013

2. Feathers

3. First seen in the Jurassic Period

4. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx.

5. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx.

6. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure.

7. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales.

8. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions:

9. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight

10. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation

11. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation Sensory?

12. Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation Sensory? Sexual Dimorphism / Courtship Rituals

13. Feather Types Contour

14. Feather Types Contour Outermost feathers

15. Feather Types Contour Outermost feathers Strong and stiff for flight

16. Feather Types Contour Outermost feathers Strong and stiff for flight Each feather controlled by specialized muscles.

17. CONTOUR

18. Feather Types Down

19. Feather Types Down Used in insulation.

20. Feather Types Down Used in insulation. Very soft and fluffy.

21. Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks.

22. Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks. Rachis is missing or reduced.

23. Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks. Rachis is missing or reduced.

24. Feather Types Semiplume

25. Feather Types Semiplume Found between other feathers.

26. Feather Types Semiplume Found between other feathers. Help maintain warmth AND smooth shape.

27. Feather Types Semiplume Found between other feathers. Help maintain warmth AND smooth shape. Cross between down and contour.

28. SEMIPLUME

29. Feather Types Filoplume

30. Feather Types Filoplume Simplest of feathers

31. Feather Types Filoplume Simplest of feathers Almost all rachis and few barbs.

32. Feather Types Filoplume Simplest of feathers Almost all rachis and few barbs. Aid in structure and sensory.

33. FILOPLUME

34. Feather Types Bristles

35. Feather Types Bristles Very small contour feathers

36. Feather Types Bristles Very small contour feathers Highly specialized

37. Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts

38. Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak

39. Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback

40. Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback Insect catching

41. Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback Insect catching Maybe in protection.

43. BRISTLES

44. MORPHOLOGY