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36 Cards in this Set

  • Front
  • Back

Birds class

Aves

Heavier bird weight

156kg

What are Aves essentially

Feathered homeothermic reptiles

Aves beak matseial

Keratin

Bird and dinosaur shared ancestor

Archosauria

Flightless bird superorder

Paleognathae

Superorder birds with flight

Neognathae

Ideas of wing evolution

From arms used to jump. From gliders. From mating displays.

Golden tree frog

Uses webbed feet as parachute. Coukd be similar to sing evolution.

Javin flying frog

Webbed feet evolved into mini wings, glides at an angle.

Wallace frog

Uses webbed feet an slow and control descent. Can fly forward as far as down distance


Flying gecko

Fringes on body

Dragon lizard

Huge frisbee like sail. 200m!

Golden tree snakes

Loops body and projects body forward theb flattens and glides ib air using s shaped patterns . 150m!

What do birds need for flight

Light body, power, excellent vision

Flight adaptations

Feathers, elimination of some bones, fusion of others, hollows, keratin beak.

Use of feathers

Provide lift, repel water, insulate body

Types of feather

Tail, flight, plume, semiplume, downy, filoplume and bristle

Endothermic

Maintain body heat despite weather conditions

Mammal endotherm temp

36-39

Bird endotherm temp

40-42

Endothermic regulation

By oxidation of food, cellular metabolism, muscular contraction

Original father evolution reason

Insulation NOT flight

What supports wing muscles

Fused trunk vertebrae

Wing muscle attachment

Keel on sternum

Respiratory system of birds

One way

Heart of birds

4 chambered heart

Pneumatized bones

Hollows

Synsacrum

Fused vertebrae

Internal bird organ organisation

Shifts centre of gravity

What muscle depresses wing

Pectoralis

What muscle raises wing

Supracoracoideus

Four major wing forms

Elliptical, high speed, dynamic soaring, high lift

Aspect ratio

Ratio of wing length to average width

Stupid

App