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Marine Birds

Marine Birds. History. Probably evolved from dinosaurs about 160 million years ago. Their reptilian heritage is clearly visible in their scaly legs and claws and the configuration of their internal organs and skeleton. Characteristics. Endotherms Feathers Hollow Bones

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Marine Birds

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  1. Marine Birds

  2. History • Probably evolved from dinosaurs about 160 million years ago. • Their reptilian heritage is clearly visible in their scaly legs and claws and the configuration of their internal organs and skeleton.

  3. Characteristics • Endotherms • Feathers • Hollow Bones • Highly Efficient Respiratory System • Lay Eggs On Land • Incubate And Care For Young

  4. Adaptations For Marine Life • Like marine reptiles, seabirds have special salt-excreting glands in their heads to eliminate the excess salt taken in with their food. • Voracious feeders • True seabirds avoid land unless breeding

  5. Four Main Groups • Tubenoses • Pelicans And Their Relatives • Gulls • Penguins

  6. Tubenoses • Albatrosses • Most Oceanic • Large Efficient Wings • Plumbing In Beak Responsible For Sensing Air Speed, Detecting Smells, And Disposing Of Excess Salt

  7. Pelicans And Their Relatives • Pelicans, Cormorants, Frigate Birds, and Boobies • Throat Pouches • Webbed Feet

  8. Gulls • Gulls and Terns • Efficient Flyers • Live Near The Shore • Buoyant Swimmers • Good Runners

  9. Penguins • Lost ability to fly • Solid Bones • Greasy Peg-Like Feathers • Large Size And Weight • Neutral Buoyancy • Good Swimmers • Native to Southern Hemisphere

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