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Birds. 3/27/07 How are birds related to mammals?. Birds. Kingdom: Animalia Phylum: Chordata Class: Aves Definition: Endothermic, feathers, 2 legs with scales, front limbs are wings Example: Parrot, blue birds, robins, cardinals, etc. Habitat: Everywhere. Physical Characteristics.

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Birds

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Birds

3/27/07

How are birds related to mammals?


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Birds

  • Kingdom: Animalia

  • Phylum: Chordata

  • Class: Aves

  • Definition: Endothermic, feathers, 2 legs with scales, front limbs are wings

  • Example: Parrot, blue birds, robins, cardinals, etc.

  • Habitat: Everywhere


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Physical Characteristics

  • Endothermic, feathers; 2 legs with scales, wings, hollow bones

  • 2 types of feathers

    • Contour feathers—flight

    • Down feathers– warmth and waterproofing


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Feeding

  • Very efficient digestive system

  • Beak is adapted for food

  • No teeth

  • Mouth esophagus crop  stomach gizzard  intestines cloaca

  • Gizzard part of stomach

  • Some birds regurgitate food from crop to feed young


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Excretion

  • Cloaca reabsorbs water so waste becomes white paste

  • Kidneys filter waste from blood


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Respiration

  • Efficient

  • Air flows in 1 direction


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Circulation

  • 4 Chambered heart

    • 2 ventricles and 2 atrium

    • Separate oxygen rich from oxygen poor blood


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Evolution

  • Dinosaur with feathers

  • First birdlike animal about 150 million years ago called Archaeopteryx


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Nervous System and Movement

  • Brain large for body size

  • Movement

    • Walk, run, swim, and fly


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Response

  • See color well

  • Good hearing

  • Not good taste and smell


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Classification

  • Similar Characteristics


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Reproduction

  • Amniotic egg

  • Sex organs shrink until mating


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Defense

  • Flight

  • Singing

  • Beaks


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Groups of Birds

  • 30 different orders

  • Most common passerines (perching birds)

    • 5000 species perching birds

  • Birds of prey

  • Parrots

  • Pelicans and relatives

  • Cavity-nesting birds (woodpecker)

  • Herons and relatives

  • Ostriches and relatives


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