Bird Anatomy and Offspring

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5 Terms

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Internal Organs

Fast, efficient GI tract, high metabolic rate, double circulation with 4 chambered heart

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Senses

Endothermic, no urinary bladder (excrete uric acid), well developed brain, acute vision and hearing

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Reproduction

Internal fertilization; elaborate mating rituals; eggs are brooded

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Precocial

Born covered with down; active immediately; can run and swim when dry (quail, duck geese)

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Altricial

Born naked and helpless; in nest for >1 week; require extended parental care (songbirds. raptors, penguins)