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Birds and flight

Peterson, SCIENCE. Birds and flight. Bird Characteristics Feathers Contour feathers (Flight feathers) help give lift and steer in flight give color and shape Down feathers insulate. Birds. Scales on legs and feet Amniotic Egg Internal fertilization Group of eggs = clutch Endotherms

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Birds and flight

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  1. Peterson, SCIENCE Birds and flight

  2. Bird Characteristics • Feathers • Contour feathers (Flight feathers) • help give lift and steer in flight • give color and shape • Down feathers • insulate Birds

  3. Scales on legs and feet • Amniotic Egg • Internal fertilization • Group of eggs = clutch • Endotherms • Hollow bones • Beaks adapted for specific food • Oil glands - preening Birds

  4. Body Systems • Circulatory: closed system with 4 chamber heart • Respiratory: get O2 when inhale AND exhale • Well developed brain and senses • Good eye sight • Digestive: • Crop (stores food) > gizzard (grinds food) > stomach Birds

  5. Importance • Control pests and seeds • Pollinate plants • Food • Used for raw materials • Research • Pets • Inspiration for flight Birds

  6. Body Adaptations for flight • Hollow bones • Wings • Feathers – contour/flight feathers Birds

  7. Body Adaptations for flight • No bones in tail • Able to get plenty of O2 to muscles • Good circulatory and respiratory systems • 4 chamber heart • Strong chest muscles Birds

  8. Moving air exerts less pressure than non-moving air • When you blow across the top of the paper, the paper will rise up… • Fasterair = Lesspressure Birds

  9. High pressure below the wing and low pressure above produces a force that pushes up called lift. Birds

  10. The down stroke of a bird pushes the bird forward & up • Flapping requires LOTS of energy (oxygen + food) • Soaring (up) and gliding (down) require very little energy. Birds

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