Birds
Birds are interesting flying animals. They are vertebrates and warm
blooded animals. They belong to aves class and they can be found all
over the world.
Birds breath with their air pocket. Beside as respiration organ, air
pocket also can enlarge or reduce their weight when flying or swimming.
There are many kinds of birds. Earth bird has special characteristic.
They have different morphology according to their food and their
habitat. Some of them eat seeds, pollen, fish or meat. There are some
species that live in land and the others live in water. Land birds live
on their nest.
Female birds have specific tasks. they lay eggs and feed their baby, Beside that they look for foods for their baby.
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