class aves (birds)
Post on 12-Apr-2017
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CLASS AVES (BIRDS)
By: urooba zaki
CHARACTERISTICS OF AVES
HABITAT:Live on land Some are aquatic
FEATHERS: body is covered externally with feathers.
WINGS: their fore limbs are modified to form wings.
HOLLOW BONES: their bones are hollow and light so that they
can easily fly .
TOOTHLESS MOUTH: their mouth is toothless and their jaws
prolonged into beak.
SOUND BOX : There is a sound box present at the base of
their neck produces melodious voice called syrinx.
Like:
EGGS: They laid their legs on land into their nest
which are covered by hard shell.
RESPIRATION: They respire by lungs.
WARM BLOODED: They are called warm blooded because they
maintain their body temperature.
KINDS: classified into two kinds.1. flying birds.2. Running birds (flightless birds).
EXAMPLES:
Crow Sparrow Pigeon Parrot Eagle etc
Kiwi Ostrich Penguin Hen Peacock etc
Flying birds: Running birds:
FLYING BIRDS:
RUNNING BIRDS:
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