Marine Birds. All Seabirds are Endotherms (warm-blooded). They have light hollow bones, and make up...
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Transcript of Marine Birds. All Seabirds are Endotherms (warm-blooded). They have light hollow bones, and make up...
Marine BirdsMarine Birds
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