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Published byBernard Pollen Modified over 3 years ago
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Introduction to Birds Acorn Woodpecker Bald Eagle Peregrine Falcon American White Pelican
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General Info/Characteristics 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?
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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.
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System Info Circulatory: Four-chambered heart (efficiency for increasing energy use) Respiratory: Lungs working during inhalation and exhalation. Reproduction: a.Lay shelled, amniotic eggs (reptiles) b.Internal fertilization c.Incubation (warmth) Digestive: a.Beaks to grasp/crush food b.Large quantities of food for energy (flight)
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Diversity of Birds Similar appearance Behavior is main difference a.Penguins do not fly and have lots of fat b.Owls large eyes and are deft (skillful) flyers
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