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90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end

author:All things are spiritual

90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. What exactly do they do?

There is a saying in the countryside, cuckoo cuckoo, harvest wheat and cut grain! When farmers hear the cuckoo call, they know that spring has arrived and they can start farming, so the cuckoo is again regarded as a "primrose". In addition, cuckoos are master insect catchers, and with them busy in the fields, farmers have a lot less trouble.

The so-called "cuckoo", in fact, is the great cuckoo, which belongs to the order Cuckoo, the cuckoo family, a subspecies under the common cuckoo species. Because the call of the great cuckoo during the breeding season sounds like "cuckoo-cuckoo", Chinese call it a cuckoo. This kind of bird that is beneficial to production and life is naturally quite popular among people.

But few people know that their "wind evaluation" in the bird world is extremely poor, and they have done countless bad things. If the birds can be selected as the top ten "evil" birds, the great cuckoo must be among them, and the "crimes" are as follows.

First, the large cuckoo has a typical nest parasitic behavior, that is, it does not build a nest itself, lays eggs in the nests of other birds, and lets them hatch and feed on their behalf.

In fact, 1/3 of birds in the cuckoo family have this breeding habit. They do not have a fixed mate and are looking for another mate to breed every year. Both female and male birds have no nesting habits, nor do they stay in fixed nests to perch and lay eggs, so females will lay eggs in the nests of other birds and let each other incubate for it.

The hosts of these "unlucky" are basically passerine birds, such as sparrows, shriches, gray magpies, big-tailed warblers, etc. The eggs of these birds are not much different from the eggs of the large cuckoo, so even if they are put in, they will not necessarily be recognized, and the large cuckoo will take an egg away from the original nest and drop it to ensure that the number of eggs in the nest remains unchanged.

But there are also special cases where the host can be distinguished, and with the growth of cuckoo chicks, they may be stronger than the female who raised them. If the eggs of the large cuckoo are too special, the host will not nurse the chick and let it starve to death in the nest.

The seemingly absurd scene of "nest parasitism", although incomprehensible, often happens. In most cases, the host only looks at the number, does not carefully distinguish the difference between the eggs, and instinctively feeds the "spy" bird after hatching.

Second, the big cuckoo chicks that lack "maternal love" since childhood are very bad in their bones, not only are they not grateful to feed their female birds, but also take advantage of the female birds to go out after breaking the shell, push other young birds and eggs out of the nest and fall to death, trying to occupy the nest and enjoy food exclusively. Moreover, the eggs of the large cuckoo tend to hatch faster than the other eggs in the nest, so there is plenty of time to "commit crimes".

When it has the ability to survive independently, the great cuckoo leaves the foster nest and begins to busy reproducing for its own population, a typical "ungrateful" bird. It's really amazing to think of the crow that people regard as a "disaster bird", who still understands the grace of feeding back, and then look at the behavior of the big cuckoo.

Whether from the perspective of "victim birds" or humans, these behaviors of the big cuckoo are very bad, even cruel. But the laws of survival in nature are very cruel, only natural selection, survival of the fittest. The rule of elimination of the jungle makes them have to plan for the development of their own population, and nothing is more important than survival.

The behavior of the great cuckoo is understandable, not only to improve the survival rate of offspring, but also to eliminate potential threats and reduce resource competition in the first place. In terms of survivability alone, the big cuckoo is indeed worthy of admiration. #Headline Creation Challenge##所见所得, It's All Science##Big Cuckoo##Cuckoo##Cuckoo##为什么说布谷鸟很 "cruel" ##布谷鸟是一种益鸟, but why do people say it's "cruel"? ##巢寄生 #

90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end
90% of people do not know that the cuckoo is the "devil" of birds, and it has been very bad since childhood. Although it is rated as a "good bird" by humans, in fact, the "bird" is extremely poor and despicable. They to the end

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