Published : 16.06.2019.
Author : Bernard Kranjec
Have you wanted at least once in your life to fly but not on a plane, a helicopter or any other aircraft? Fly like a bird!
I think that's a good reason to envy our pets.

Why can birds fly and we do not? What do they have and we do not have?
The basic reason why this is so is that birds have feathers and bones that are hollow.

But let's go back to feather. The bird has several types of feathers of different purpose.
Except for flying birds uses feathers for many other things. I found that birds use feathers in 23 different ways:

- flying
- Keeping body heat
- body temperature control
- protection against wind, moisture and sun
- swimming and diving
- floating
- moving by snow
- sledding
- fixing
- feeling
- hearing
- production of sounds
- silencing sounds
- a quest for food
- Helps maintain a constant supply of food
- food
- maintenance of cleanliness
- aid in digestion
- building nests
- water transfer
- the escape from the predators
- sending visual signals

 We will not now describe the individual functions of each of these 23 ways of using feathers, but if you have anything you know about birds, it will be quite clear to you. Maybe on another occasion when I miss the idea of ​​writing posts. :-D

Have you ever wondered how the birds fly? What is it raising them from the ground, water, branches? How does it work?

Air pressure (red arrows) is less than low air pressure (blue arrows).
It's the way birds get bait. When the air pressure below the wings is higher, the bird gets a raise, when the pressure above the wings is higher, the bird is lowered.
Now, if I'm explaining how much pressure is coming, or less, you will not understand anything, because I'm going to roll it all up, but I think it's a matter for physicists, not bird lovers. Who wants to know more about creating a bird flying pressure search on the internet.
Anyway, the bird, to ride, has to wedge its wings and thus create thrust.
The shape of the wing and the thrust are two things necessary to move the bird through the air.
Birds use chest muscles to wiggle their wings and thus create thrust.

Let's go back to the feathers.
Since feathers are used for so many things, the assumption is that there are more types of feathers.
Feathers are long and strong and serve to fly, others are soft and have the function to maintain the body heat of a bird. We even use these feathers to maintain heat (in clothing), or in bed (to cover).

We have feathers in different shapes and sizes. What we most often notice is the tail pin and the winged feather on the wings. When we look at a tailed tail, it's just the middle of the left and right, while the fly feather has one side wide and the other narrow, making them better for flying because they can cut the air with very little resistance.
Other types of feathers are found on the bird's body. Papers or fluffy feathers are used to maintain body temperature.
Feathers of semiplume help the birds to float. Some birds have feathers around the eyes and nose, and some birds that love insects have mouth feathers.
The color of feathers in some birds is so incredible and we can not create them artificially because they are caused by the fading of the light and the reflection at a certain angle, so many times the color spills.
Of which the pens are made. The material is called keratin. It is a very light and strong material. Try to take a pin in your hand, you will see that it is light (lightweight), but when you try to rip the pen, you will be very tired.
Keratin is also a component of claws and beak in birds.

Also what else would you notice in birds is that they protect their feathers with fat or so called. dust, especially from the water, but if they are for a long time, for example, in the rain, this protection will not help their feathers suck, and then they are no longer able to fly, which could have been detrimental to escaping from potential danger-predators .

I would not bother you anymore with a story about a feather, I gave some basic features, and to elaborate further, .... there is a variation on the subject, so who wants ...
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