2. BODYThe bird’s body is aerodynamic.
They have 6 parts: wing, neck, keel,
legs, beak and spinal column.
They’ve got warm blood.
Bird’s body is covered with feathers.
Their bones are hollow, this makes
easier fly.
They have no got teeth, they’ve got a
horny mandible.
WING
LEGS
NECK BEAK
3. FUNCTIONS
Respiration. They use lungs to breath.
These are connected to air sacs which
enable them to breath and to fly.
Reproduction. They’re oviparous.
Fertilisation takes place internally.
Nutrition. The shape of bird’s beak
depends on the food it eats.
Interaction. Birds are homeothermal
(body thermal that is independent of
the temperature of its surroundings.
4. -Some species of parrots, like
"kakapo" from New Zealand, they
have lost the quality of flying.
-The African ostrich is the biggest
bird, his weight is 125kg.
CURIOSITIES
A penguin can support up -60ºC in the
Anthartic zone.
