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Class Aves

Class Aves. Class Aves. Feathers No teeth Flexible long neck One occipital condyle Scales on legs Bones with air spaces Endothermic Four chambered heart. Adaptations for Flight. Honey combed bones Air cavities Less weight. Light Weight Skeleton. Frigate bird 7 foot wing span

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Class Aves

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  1. Class Aves

  2. Class Aves • Feathers • No teeth • Flexible long neck • One occipital condyle • Scales on legs • Bones with air spaces • Endothermic • Four chambered heart

  3. Adaptations for Flight • Honey combed bones • Air cavities • Less weight

  4. Light Weight Skeleton • Frigate bird • 7 foot wing span • 4 ounce skeleton

  5. Adaptations for Flight • Enlarged sternum • Flight muscle attachment • Long neck • balance

  6. Adaptations for Flight • Wing • lift

  7. Adaptations for Flight • Feathers • Light weight • Strong

  8. Adaptations for Flight • Reduce body weight • No teeth • No urinary bladder

  9. Migration • Sissor-tailed flycatchar • Migates to Central and South America in October • Returns in April

  10. Migration • Arctic tern • Migrates 25,000 miles!

  11. Beak Adaptations • Ripping flesh

  12. Beak Adaptations • Eating seeds

  13. Beak Adaptations • Sucking nectar from flowers

  14. Beak Adaptations • Drilling wood

  15. Beak Adaptations • Catching fish

  16. Beak Adaptations • Basket-like bill to hold fish caught under water

  17. Beak Adaptations • Filtering

  18. Digestive System • Crop • Storage • Proventriculus • Enzymes • Gizzard • Grind food • Cloaca • Waste • Reproduction

  19. Vision • Up to 8 times keener than human vision • Each eye moves indendtantly

  20. Respiratory System • Nine air sacs • Connect to lungs and centers of bones • Cools the bird • Fresh air always moving • No dead ends as in mammals • Each wing beat moves air • Never run out of air

  21. Benefits of Birds to Man • Eat insects, rodents and weeds • Spread seeds for flowers and trees • Food • Sport • Pets

  22. Fastest Animal • Peregrine falcon • Strikes prey at 180 mph

  23. Elephant Bird • Eleven feet tall • 1100 pounds • Largest egg ever • Extinct in late 1600’s

  24. Hummingbirds • Fly up, down, left, right, backwards and upside down • Wings beat 50 -200 times per second • Heart rate =600 bpm • Eat 2/3 body weight each day • Nectar, pollen & insects

  25. Sexual Selection

  26. Bird Classification • 28 orders • 9600 species

  27. Order Ciconiiformes • Long legs for wading • Long necks

  28. Order Anseriformes • Flat bill • Webbed feet

  29. Order Falconiformes • Hooked bill • Talons • Eagle • Hawk • Falcon

  30. Order Passeriformes • Perching foot • Songbirds • 5000 species • Mocking bird • Thrushes • Swallows • Magpie • Crow • Starling • Jays

  31. Order Columbiformes • Short neck • Short legs • Pigeons • Doves

  32. Order Strigiformes • Large eyes • Silent flight • Nocturnal predator • Owls

  33. Order Apodiformes • Small bird • Rapid wingbeat • Hummingbirds

  34. Order Galliformes • Chicken like • Strong beaks • Heavy feet • Chicken • Turkey • Pheasants • Quail

  35. Order Charadriiformes • Short bill • Strong fliers • Shorebirds • Gulls

  36. Order Psittaciformes • Thick tongue • Hinged and movable upper beak • Bright colors • Parrots • Parakeets

  37. Order Piciformes • Two toes forward and two toes backward • woodpeckers

  38. Order Sphenisciformes • Webbed feet • Wings as used for swimming • penquins

  39. Bird Information

  40. Characteristics • They are well adapted to aerial life. • The body is streamlined , spindle shape and light due to hollow bone. • The body is covered with feathers exoskeleton. • The forelimb is modified into wings. • The external part of mouth is developed into beak. • These are warm blooded animals. • They are unisexual , oviparous animals that hatch the eggs. • Respiration through lungs. • Heart has four chambered. • Eg. Parrot , Owl , Kite etc.

  41. Represented by:Shri.Bangar.N.K.B.Sc.B.EdMahatma Gandhi Vidyalaya,Manchar

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