A weird and selfish behavior in certain birds, older nesting birds will often kill their newly hatched younger siblings. When birds are born they try to compete with siblings for resources, such as food by physically killing each other to have more. In a different point of view when I say physically killing each other, as the older chick grows and the newly hatched chick comes out to feast the older chick kills the young one for more food and attention from the mother. When the chicks start coming out of the eggs, the oldest chick peck with the beak into the siblings heads until they die.
Chicks contain this behavior due to their selfishness. This is a selfish behavior where the performer, in this case get all benefits and the recipient loses his/her life. By killing and then eating their siblings, the older chick gets good nutrients to survive and gets fit to the new environment. In addition, the oldest chick could be more spoiled and taken care of by the mother. Consequently, the chick could have more probabilities to survive and grow up to start the role in the bird group and keep with the cycle of bird’s life.
This lack of behavior is not only for young chicks, but also for other animals. A big amount of animals has this selfish behavior to survive and keep the species. This is a fact that represents the behavior of generation to generation of animals in order to maintain the strongest living and maybe a balance in the nature.
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