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Birds

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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  1. Birds 3/27/07 How are birds related to mammals?

  2. 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

  3. Physical Characteristics • Endothermic, feathers; 2 legs with scales, wings, hollow bones • 2 types of feathers • Contour feathers—flight • Down feathers– warmth and waterproofing

  4. 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

  5. Excretion • Cloaca reabsorbs water so waste becomes white paste • Kidneys filter waste from blood

  6. Respiration • Efficient • Air flows in 1 direction

  7. Circulation • 4 Chambered heart • 2 ventricles and 2 atrium • Separate oxygen rich from oxygen poor blood

  8. Evolution • Dinosaur with feathers • First birdlike animal about 150 million years ago called Archaeopteryx

  9. Nervous System and Movement • Brain large for body size • Movement • Walk, run, swim, and fly

  10. Response • See color well • Good hearing • Not good taste and smell

  11. Classification • Similar Characteristics

  12. Reproduction • Amniotic egg • Sex organs shrink until mating

  13. Defense • Flight • Singing • Beaks

  14. 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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