Cuckoo bird is a general term for cuckoo birds, including cuckoos, Mi Guiyang, Sub-gauge birds and other cuckoo birds. About one-third of cuckoos raise their young in a nest parasitic fashion. In layman's terms, it is to find good "adoptive parents" before their offspring are born. The great cuckoo is the most typical of the more than 80 species of nesting parasitic birds available, and it can even parasitize its eggs in the nests of 125 species of birds.
The Great Cuckoo
This was the nest of the crow magpie, and it was obvious that there was an uninvited guest in the nest. The bigger egg was secretly laid by the big cuckoo when the crow's parents were not there. To avoid arousing suspicion, the great cuckoo has taken an egg from a crow magpie in advance to ensure that the total number of eggs in the nest remains the same.
The eggs of the crow magpie and the eggs of the great cuckoo
The cuckoo's eggs hatch after 11 days, and the cubs of the great cuckoo are born a few hours ahead of its xeno sisters. The newborn cuckoo began plotting to kill his siblings after taking the first bite of food from his adoptive parents.
A cuckoo that breaks out of its shell ahead of schedule
The back of the cuckoo is very flat and sensitive, and it will throw the other eggs and chicks in the nest on their backs one by one and throw them out of the nest. This is the evil that the cuckoo bird has evolved over millions of years and is engraved in its genes.
Cuckoo chicks pushed a small crow magpie off the nest and fell to its death while its adoptive mother was present
Cuckoo chicks carry unborn crow eggs and push them out of the nest
The last crow magpie was also thrown out of the nest by the cuckoo chicks and fell to their deaths
The chicks of the Great Cuckoo succeeded in taking three kills. From now on, it can get all the love and food of the parents of the crow.
Only the chicks of the great cuckoo remain in the nest
After 21 days, the cuckoo grew to the size of the crow's nest, and it was still a chick, and it was much larger than its adoptive parents. I had to lie on a nearby branch and continue to be fed by my adoptive parents.
Cuckoo chicks are older than their adoptive parents
After another 15 days, the cuckoo learns the art of preying on insects and can live independently, leaving the nest and parting ways with his adoptive parents. Cuckoo birds do not know who their parents are all their lives, they are a group of poor creatures, but they have carved this cruel breeding method in their genes.
Perhaps we will think that the breeding behavior of the cuckoo, which makes people "happy to be a father and a mother" every day, is too shameless. But we humans are only one of the spirits of the earth, and the purpose of protecting nature is ultimately only to protect ourselves. Selfishness or not is only a difference in the scale of wisdom, selfishness is the smallest selflessness, and selflessness often contains greater selfishness. In the end, we are just an ordinary being, a species that follows the biological code. Therefore, we cannot use human emotions to constrain the cruel laws of survival in the animal kingdom.
I am blue dye, pay attention to me, accompany you to hunt for natural things.