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Flashcards in Birds 2 Deck (7)
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1
Q

What does Newton’s Law and Bernoulli’s principal concern?

A

Physics & flight.

2
Q

What are feathers used for?

A
  • Flight
  • Insulation
  • Waterproofing
  • Display
  • Camouflage
  • Eye and nostril protection.
3
Q

Describe adaptions for flight.

A
  • Pneumatic bones
  • Feathers attached on hand (primaries) and arm (secondaries)
  • Fused carpals and reduced digits
  • Large flight muscles attached to keel
4
Q

How do birds minimise drag during flight?

A
  • Streamlining - lack of external ears, feet tucked in, feathers, wing shape
  • Flying in the wake of other birds e.g. Birds
5
Q

What is the purpose of primary and secondary feathers?

A
  • Primary = propulsion

* Secondary = lift.

6
Q

What is the wing loading?

A

Mass/wing area.

7
Q

What is the aspect ratio?

A

Wing length:Wing Breadth.