Kuslar Neden Uabilirler

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Kuslar Neden Uçabilirler?

• Tüyler, kanatlar ve vücut sekilleri, kuslara uçma
  yetenegi kazandirir.
• Kuslarin güçlü gögüs kaslari vardir.

Gögüs kasi
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UÇUS

• Kuslar havada haraket etmek için kanatlarini
  çirparlar (flapping).
• Küçük kuslar daha hizli kanat çirpmak
  zorundadirlar.
• Kuslar planör gibi havada kanat çirpmadan
  uçabilirler (gliding)
• Kuslar süzülerek de (soaring) uçabilirler.
• Havada sabit kalabilirler (hovering)

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KANAT ÇESITLERI
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Slope soaring depends on the movement of air
rising to the hilltop.
Gust soaring is possible where two fronts meet
Gust soaring is possible where two fronts meet
Columnar type thermal soaring is only possible
in warm regions.
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UÇUS ÇESITLERI

• Flapping
• gliding
• (soaring)
• Hovering
• (Eagles, Osprey, Black breasted buzzard,
  Harriers, Kites, Pacific Baza)

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Aerodynamics

• Birds use three movements of their wings when
  flying
• flapping
• twisting
• folding
• Visit http//www.catskill.net/evolution/flight/b
  irdsfly/birdsfly.html to learn more about the
  aerodynamics of birds.

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Non-Flying Birds

• Wings are smaller
• Greater number of symmetrical feathers covering a
  larger portion of their bodies.
• Flat vs. round breast bone

• For viewing some non- flying birds visit
• http//www.enchantedlearning.com/subjects/birds/pr
  intouts/Flightless.shtml

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Caudipteryx

• Feathered dinosaur
• Flightless
• Transitional fossil
• Dinosaur arms
• Dinosaur teeth
• Only front of upper jaw
• Bird feathers

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Archaeopteryx

• 147 MYA
• Transitional fossil
• Characteristics of reptiles
• Characteristics of birds

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Archeopteryx

• Reptile characteristics
• Teeth
• Boney tail
• Fingers with claws
• Bird characteristics
• feathers

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Click Image for Movie
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Evolution of FlightRunning Hypothesis
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Microraptor gui
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Evolution of FlightGliding Hypothesis