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CLASS AVES (BIRDS)
By: urooba zaki
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CHARACTERISTICS OF AVES
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HABITAT:Live on land Some are aquatic
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FEATHERS: body is covered externally with feathers.
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WINGS: their fore limbs are modified to form wings.
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HOLLOW BONES: their bones are hollow and light so that they
can easily fly .
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TOOTHLESS MOUTH: their mouth is toothless and their jaws
prolonged into beak.
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SOUND BOX : There is a sound box present at the base of
their neck produces melodious voice called syrinx.
Like:
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EGGS: They laid their legs on land into their nest
which are covered by hard shell.
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RESPIRATION: They respire by lungs.
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WARM BLOODED: They are called warm blooded because they
maintain their body temperature.
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KINDS: classified into two kinds.1. flying birds.2. Running birds (flightless birds).
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EXAMPLES:
Crow Sparrow Pigeon Parrot Eagle etc
Kiwi Ostrich Penguin Hen Peacock etc
Flying birds: Running birds:
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FLYING BIRDS:
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RUNNING BIRDS:
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