Marine Birds.

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Presentation transcript:

Marine Birds

All Seabirds are Endotherms (warm-blooded) All Seabirds are Endotherms (warm-blooded). They have light hollow bones, and make up 3% of all birds. Can be found from pole to pole. The major groups of Seabirds include: Penguins Tubenoses Pelicans Gulls Shorebirds

Penguins: 17 species found in southern hemisphere Spends 75% of lifetime in water

Penguin Adaptations: Heavy, solid bones for diving Watertight feathers (up to 70 per sq. in.) Blubber for insulation Oil gland for coating feathers Black & white counter shading Deep divers - 500 m, 15 min. Paddle-like feet Streamline, fusiform body - 15 mph Social

Nesting

Nests on pack ice

Tubenoses Have tube-like nostrils at the end of their beaks Spend months at sea feeding on fish Include Albatross and other long range fliers.

Salt Excretion in Birds

Pelicans Have pouch like beaks Related to Cormorants and Frigate birds

Gulls and their relatives Mostly predators and scavengers Hang out at dumps Related to Puffins

Shorebirds Lack webbing in their feet Don’t swim much Pick through mud or sand Include sandpipers, herons, egrets