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Introduction to Birds

Introduction to Birds. Bald Eagle. Acorn Woodpecker . Peregrine Falcon . American White Pelican. Class Aves: 8,600 species Developed from a Theropod Dinosaur Endothermic : maintain constant body temperature (homeostasis and live in different environments.)

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Introduction to Birds

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  1. Introduction to Birds Bald Eagle Acorn Woodpecker Peregrine Falcon American White Pelican

  2. Class Aves: 8,600 species Developed from a Theropod Dinosaur Endothermic: maintain constant body temperature (homeostasis and live in different environments.) Clawed toes and scales on feet only. Hollow bones to aid in easy flight. How do birds fly? General Info/Characteristics

  3. Wings/Feathers • Feathers are modified scales, aiding in flight and providing protection and insulation. • Preening: birds run bill through feathers to keep them in good condition. • Molting: birds shed old feathers (in pairs to maintain balance), replacing them with new ones. • Wings are front limbs, attached to sternum. • Added info: flight muscles are attached to wings at sternum.

  4. System Info • Circulatory: Four-chambered heart (efficiency for increasing energy use) • Respiratory: Lungs working during inhalation and exhalation. • Reproduction: • Lay shelled, amniotic eggs (reptiles) • Internal fertilization • Incubation (warmth) • Digestive: • Beaks to grasp/crush food • Large quantities of food for energy (flight)

  5. Diversity of Birds • Similar appearance • Behavior is main difference • Penguins do not fly and have lots of fat • Owls large eyes and are deft (skillful) flyers

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