Parrot Aoi and Raven Ado

Under the big poplar tree outside the gate of Hayakawa's house, there is a small pile of "firewood piles". There are various materials, shapes, and branches and branches of various lengths and thicknesses in the firewood piles. It was brought back one by one from the virgin forest in the south of the mountain.

Now Du is still repeating this work. It has to pick up more than [-] roots, at least enough to build the foundation for the bird's nest to be built before it stops temporarily.

In fact, there are many trees on Simu Mountain, and there are many fallen leaves and dead branches. For example, there are many broken branches that can be used to build nests. But Du still decided that he still had to go to the primeval forest to find all the materials needed to build the nest.

Because the big raven who was in charge of teaching them how to build their nests once said that the hardness and flexibility of different tree branches are very different after they dry up.

If you want to build a stable bird's nest, the selection of materials is very important. You must choose the kind of branches with strong toughness and moderate hardness to build the main structure of the nest, so as to ensure that the nest is wind-resistant, compressive and pull-resistant after completion With strong abilities, this kind of lair is safe.

Whether it is the cherry blossom trees of various varieties in the cherry blossom sea, or the various landscape trees planted in the Hayakawa hot spring hotel, most of them do not meet this requirement.

Du is a serious bird, especially when dealing with things like nests, he has always been striving for perfection and even caring about every detail.

For things like materials, it will never settle for anything. No matter how far away it is, it must bring back the most suitable tree branches from the virgin forest, so as to build the best and strongest bird's nest.

Aoi stood on the bird path in the attic, watching Du with a complicated expression come back with a thick branch in his mouth, threw it on the 'firewood stack', and immediately flew away to find the next material suitable for nesting.

It's been a morning, and Du is like this, tirelessly bringing back one piece of wood from the virgin forest in the south of the mountain, little by little adding bricks and tiles to the bird's nest that is about to start construction.

After waiting for about ten minutes, Du flew back again, carrying a thick and long hardwood branch with three or four branches.

This time, he probably finally collected enough materials for the first phase of the project. Du didn't fly away again, but flew towards the center of the crown of the big poplar tree with the three- or four-branched hardwood branch in his mouth.

To build a qualified bird's nest, the base is an important step, just like the foundation of a house, it determines the bearing capacity and wind resistance of the bird's nest after completion.

The base material Du chose for his bird's nest is ginkgo wood, which has a long growth cycle, compact wood structure, high density and strong flexibility, making it the most ideal base material for building a bird's nest.

Moreover, Du once heard from Aoi that this kind of wood has been a processing material for high-end furniture since ancient times.

And the fact is indeed the case, because it is easy to process, corrosion resistance, good dry shrinkage, not easy to deform, not easy to warp, not easy to be eaten by moths, and not easy to crack. Crafts and sports racquets and clubs favor this wood.

So Du decided long ago that the base of his lair must be made of ginkgo branches. Fortunately, in the virgin forest on the south side of the mountain, there happened to be a few ginkgo trees that were more than a hundred years old growing there.

Of course, Du is not the only bird who knows the benefits of this material, so Du has already fought more than one fight there this morning.

The birds that fought with Du included great tits, mountain magpies, wagtails, and other young ravens who studied with him in the same class, as well as mountain jays, mountain falcons, night owls, etc. Dire birds of prey.

Facing these guys, Du is fearless, and anyone who dares to compete with it for materials to build a nest will dare to stretch out its claws at any time.

Seeing the big raven flying up and down in the canopy of the big poplar tree with a branch in its mouth, trying to find the most suitable building location, Aoi felt a little complicated.

It is like a single father who heard that his child is going to buy a house outside, he is both proud and very reluctant in his heart.

What I am proud of is that the child is promising and can live independently when he grows up. What is sad is that the child will leave him when he grows up.

Du didn't know about the complicated mood of Aoi who had been paying attention to him all the time. He was jumping up and down in the canopy of the big poplar tree with the carefully selected ginkgo branch in his mouth, just to find a place suitable for him. Security location.

As an outstanding student who graduated from Shannan Raven's class, Du's theoretical knowledge is not a problem at all, but the problem is that for things like nesting, even if the theoretical knowledge is rich, when you really do it yourself, you will feel that you don't know what to do. How to do it.

After trying several times, he was not satisfied. Du put the ginkgo wood in his mouth aside, scratched his cheek with his paw, and began to try to recall how the bird's nests he had seen were built.

Well, needless to say about Aoi, the bird's nests are all bought ready-made.

Bird's nests made by humans or made of metal or hard plastic are not objects that can be studied at all, and are excluded first.

On the side of the raven group in Shannan, when the teacher taught, he carefully explained the precautions when building the bird's nest. Du memorized those very clearly, but it was not easy to use.

Looking at the basic materials that he had managed to get together, Du was reluctant to waste them easily, so after much deliberation, he finally decided to temporarily stop building the bird's nest and go to the raven group to continue learning.

The situation of the ravens in Shannan is much better now than in the cold winter.

After the spring returned to the earth, the budding cherry trees and the green earth brought the first wave of food to the ravens who had suffered through the winter, and after they were full, the big ravens in the group that followed the weather began to be restless.

The big ravens that already had a partner formed pairs, some stayed in the group, and some chose to leave temporarily.

But no matter how they choose, those ravens who don't have a nest are now working hard for their own homes.

After what happened to Mr. Xuan, the attitude of the ravens toward Du has eased a lot. Although he did not directly regard him as a member of the group, when he entered and left the territory of the Shannan ravens, there were no ravens. Sounded the warning.

At this time, in the primeval jungle in the south of Shanxi, there are birds busy repairing or building nests everywhere. If you want to observe and learn, it is an easy task. If you want to find it, you must find the best one. In order to learn the most useful knowledge.

Watching Aoi's figure fly by at low altitude, one or two crows would be heard from time to time in the woods.

It was winter, and the ravens who had rescued Mr. Xuan together with it had experienced some things together, and they still had some feelings.

As for the other ravens, especially the young female ravens who haven't had a partner yet, the way they look up at Du is particularly complicated.

Since last winter, when the ravens brought Du's magical aesthetics back to the group and told them, the female ravens knew that their chances were slim.

No matter how capable they are, they can't turn their feathers into tender pink and crowns into rose red, which is simply too difficult for a bird.

So even though they were coveting Du Du's combat power that could almost unify Shannan, the female ravens finally gave up their pursuit of Du Du, because this guy's hobby is really special.

This attitude of the female ravens reassured those young big ravens who were slightly hostile to Du. there is none left.

What Du is looking for is a male raven named Lei. From his name, it can be seen that this guy is good at building, and he is recognized as the best guy in the group for building nests.

When Du found it, this guy was busy strengthening his bird's nest. Seeing that there were more and more little birds around him, this guy thought about it, and then looked at his bird that had been used for many years and repaired. nest, decided not to repair it, and built a new one.

Knowing that Lei intends to rebuild the bird's nest, the little ravens who came to learn from the teacher expressed their willingness to help.

These little creatures flew out excitedly, and brought back many kinds of materials to Lei in groups of three or four. While picking among them, Lei taught the birds how to choose the right wood.

"The wood for the infrastructure must be thicker, and the wood should be high-density and tough. The higher the bird's nest material is, the thinner it should be, but the branches must be more, so that they can cross each other and ensure the stretching space of the bird's nest. ….”

As it spoke, it carefully selected, and the eyes of a group of little birds were all focused on it. Today, Lei is going to teach them how to lay the 'foundation' of the bird's nest.

The thick wooden branches are firmly placed on the branches of the trees, and the side with the branches is inserted on the branches of the trees like a falcon structure.

"After one is built, the other side of the branch must be placed on the side of the first one without branches just now, and use this branch to fix the other one to the tree."

"The third one is the same as the second one, and the second one is also fixed on the side of the branch. Note that the end without a branch must find a way to stuff it into the first branch, so that a stable bird's nest base can be considered complete. "

Lei was busy flying up and down on the branches while explaining. Those little ravens who are studying hard are like the audience watching a table tennis match. Their little heads keep shaking up and down, left and right, back and forth according to its direction. Just how cute.

After the base of the bird's nest was built, Du found that the other party didn't know whether it was intentional or not. The base happened to be a triangle, which was the most stable structure among all the shapes mentioned by Aoi.

After discovering this, Du was thoughtful, but firmly remembered this point in his mind, and then continued to listen attentively.

Before the sunset, Mr. Lei's basic construction class of the bird's nest was finally over. After learning what he wanted to learn, he took off and went home satisfied.