Shibaura☆Animals

Birds are vertebrate other than the Amphibians ,Reptiles, Fishes, Mammals.
Birds are born in egg production.

Yes.

But it is not the only.

It bird　and humans are homeothermic animal,too.

It 's animals can be kept constant body temperature.

There is something different from the human to bird.It can be covered with feathers, their beak without teeth, and forefoot evolved wings.

But some birds can not fly.

Yes.

Birds, where they live area is very wide.

Birds, live through from North pole to South pole!

Their size is different.

Yes. The smallest bird is the bee hummingbird of about 5cm.

What's wrong？

To ｔake to communicate　when birds are breeding using Birdsong.
They usually breed become a ｂreeding pair.But some species breed in polygamy or , polyandry.
And,parents will get to take care of the children.

Yes！

Oh!

Just a minute.
I can't fly if I heavy.

Yes.
Bone of birds is less than in other vertebrates.
There is weight of 　birds　bone only 5% of body weight.
So I have enough　food.

Other,the bird pectoral muscle is developed for the bird fly.
This is the muscle necessary to fly.、This accounts for 15% of body weight.
And,they have the of the body that do not sink in large amounts in the body waste.

No.
Penguins are swimming in the water in the pectoral muscle used by the fly birds.
However, their body weight is heavy.

Ok!
I'll introdece some Birds.