Feathers

• Flight

  strength

  found in wings and tail

  allows bird stay airborne
• Birds have feathered skin which is covered by scales that are not as hard as those found on reptiles.
• Bristle

  protect eyes

  funnels food into mouth

  eyes/mouth of inspecting eating bird
• Filoplume

  sends info to brain about feather allighnment

  attached to nerve endings
• Semiplume

  found underneath contour feathers

  insulation
• Down

  sift and fluffy

  insulation
• Contour

  give shape and colour

  insulation

  make bird Streamlined
• Feathers overall:

  made beta keratin

  6 different types

  numbers change throughout year
• Feather functions:

  flight-stay airborne, streamlined

  protection-underlying skin, eye/mouth areas

  warmth- insulation, numbers change throughout year

  stealth-silent flight

  displaying- mating, colours/dance

  Avoiding predators-colour flash (distract/camo)

  walking-weather conditions, ptarmigins- walk on snow
• Aviding doct
• hollow Shaft