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6. Birds - Coggle Diagram
6. Birds
General characteristics:
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They can be...
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Herbivores (eat fruits, plants and seeds).
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Body characteristics:
Four limbs:
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Legs adapted for a specific function (swimming, climbing, running or hunting).
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Beaks, all birds have beaks or bills with not teeth. Shape of the beak depends on the type of food that the bird eats.
Feathers, cover the body and protect it against changes in temperature.
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Homeothermic, they can regulate their body temperature independently of their environments.
Parts of a feather 
Barbs, branches on both sides of the shaft.
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Calamus, part under the skin.
Groups
Flying birds.
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Flightless birds.
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