Hearing Genma's words, the three of them immediately followed Genma. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 Running through the dense forest was not an easy task, but fortunately, the Pokémon did not realize that someone was following it, and after flying for a while, it landed and stopped in the treetops to rest, so that the four did not lose it.

"What is that bird Pokémon? It seems like I've never seen it before!" Ah Bi looked at the Pokémon parked on the treetops and asked suspiciously, although he was not familiar with bird Pokémon, there were only a few bird Pokémon in the entire Guandu City, and this one in front of him was definitely not any of them.

"Could it be a glitter elf?" Shota guessed as he looked at its orange-red feathers.

"No," said Pen, "the Glitter Elf is a special case, have you ever seen such a special case in large numbers?" Pen pointed to the tree next to him, where a group of equally unfamiliar bird Pokémon stayed, although it was different from the one everyone was tracking, but judging from the color of its feathers and size, it was likely to be what it looked like before it evolved.

Genma said, "Don't guess, this is not Chengdu and Guandu, or even Pokémon from this continent, but bird Pokémon from the distant Carlos region. We were chasing the rocket sparrow in the second stage of evolution, and the ones next to it were the ones that it used to look like, called the little arrows. I think they're probably the cause of the Bug Elves riot in this forest. ”

"Ah, why?" Ah Bi was a little confused, but Shota vaguely understood, but he couldn't say why.

"Because this is a species invasion!" Genma said confidently, due to the existence of supernatural forces, the development of this world is extremely uneven, and some basic disciplines have not been established, which has caused many blind spots in science.

For example, the concept of species invasion that Genma is talking about now is a concept that involves biology, and the discipline corresponding to biology in this world is the study of elves, but because of the mysterious and changeable nature of elves, scientists always focus most of their energy on studying elves themselves, and rarely study their interactions with the environment.

Species invasion, also known as biological invasion, refers to the phenomenon that a certain organism is naturally introduced from other places or artificially introduced into the wild state and causes certain harm to the local ecosystem.

In Genma's previous life, the invasion of species has unveiled the veil of mystery, and more and more people are appearing in front of people's eyes, what Asian carp occupies the water system of Australia and the United States, what European hairy crabs are flooded, and what water hyacinth is outburst in a large area...... are all examples of invasive species. These alien species encountered a suitable environment in the local area, and there was no natural predator restraint, and naturally they quickly flooded, seriously affecting the original local ecosystem.

And in this world, probably due to the scarcity of elves and the lack of reproductive ability, this phenomenon is rarely triggered. However, as a domestic bird, the rocket finch has good strength and attributes, and its reproductive ability is also very strong, so it naturally meets the conditions for triggering species invasion.

After a pause, Genma said in a language that the three of them could understand: "The rocket sparrow is a dual-attribute spirit with fire attribute and flight attribute, and the restraint against insect elves is very serious. If it lives in this forest, it will inevitably compete with other elves for resources and space to survive. Compared with the local birds Pokémon Bobo, Bigmouth Finch, and Coo, it does not have a significant advantage, so the Bug Elves that are seriously restrained by it become the best target. The insect elves can't defeat it, and naturally loses the space and resources to survive, so they will be restless, and even want to drive away the humans, and use the safe road as their new territory, so it is understandable to attack the humans. ”

Ah Bi nodded, "I remember that this area was originally the habitat of the giant needle bee, but now there is not a single big needle bee to be found, it should be what you said!"

"So what are we going to do next?" Shota asked, and Ah Bi also looked at Genma, now that he had found the reason, the next step was to solve the problem.

"Two ways!" said Genma, "First, catch all those rocket finch, and send them back to their hometowns. Since the trouble is caused by these birds, as long as you catch them and send them away, everything is not a problem. These birds should have just settled here, and they have not yet formed a population, so there are not many of them, so it is not very difficult to catch them.

Second, let it go. Nature has the ability to self-regulate, and as long as a period of time passes, these spirits will gradually run in and form a new order in the constant collision. Although this method takes a long time, once the new order is formed, there will be one more local Pokémon, which is actually a good thing for the entire forest!" "After all, the elves are not those ordinary species in their previous lives, and their reproductive ability is much weaker, so it is difficult to cause a situation like in their previous life. Moreover, even in previous lives, species invasions were mainly caused by organisms that did not have much value to humans, and if they were valuable, it would be difficult to cause species invasions. Corn, for example, is not a plant native to Asia, but it has never been heard of as an invasive species. The rocket finch is a kind of spirit that most people on this continent have never seen before, and it is estimated that before it spreads, it is captured as a cherished elf! In a sense, humans are the most terrifying species, and carp and hairy crabs are infested only because the locals do not eat them.

Ah Bi thought about it for a while, and decided to choose the first plan, after all, he prefers the insect elves, from the perspective of the insect elves, these foreign guys can't bring them any benefits, if they are completely integrated into this environment, the living space of the insect elves will be greatly compressed. And maybe these elves will use the insect elves as food in the future!

However, of course, this reason cannot be spoken, and Ah Bi said euphemistically: "I think the first bill is better, after all, it is faster and more efficient." If you want to use the second word, I don't know when this forest will calm down!"

Genma nodded, Ah Bi's choice was not what he expected, in fact, the risk of the second option is indeed too great, after all, these little arrows and rocket finches are not dead things, but very athletic elves, if left unchecked, they may quickly spread to the entire continent after the number grows, and the reaction caused by that time will be too great.

"By the way, where did these elves come from?" Ah Bi asked, if this problem is not solved, even if the few in front of you are solved, maybe there will be follow-up!

"I don't know about this!" Genma shrugged, he was not an all-knowing and all-powerful portable old man, how could he know everything.

"I guess someone else released it!" said Duo Track, who had not spoken all this time, and raised a strip of cloth that had been burned in half, with some prayers written on it, "I found this in a tree on the way over, it must have been wrapped around the feet of the rocket sparrow, but it was broken free." "In many places, there is the act of releasing spirits to pray for good fortune, but if this kind of thing works, the guy who released the rocket finch should receive more karma!

"Then let's catch them!" Shota was eager to try, this kind of elf that he had never seen before, he still wanted to see it, of course, it was just to see, he didn't plan to raise one, it was too troublesome.

"I'm not interested, it's too troublesome!" Genma said, this is not a game, wild elves will be waiting for you to catch, as long as you can't beat a flying elf like this, you can run to show you every minute!

"Go directly to the town and spread a rumor, tell everyone that there are never-before-seen bird Pokémon in the forest, and after a few days, it is estimated that there will be no bird feathers left, so why use your own effort to catch it!"

The three of them looked at each other.