With that the physically useless are removed leaving the better genes to propagate.In the end the best one remain.After they grow to certain size, they are then pruned, leaving only two or threeIn yukkuri's case, although this also depend on the season, baby yukkuri can't maintain their own body heat. They can easily froze to death or caught disease like yu-cold or yu-diarrhea. When they only have 1-2 child, mother yukkuri wouldn't be able to leave her children for even a moment. But with many siblings they can gather up and help keeping each other's temperature.In addition, it's well known that yukkuri likes to form a herd and feel calm by rubbing their skin on each others.
A single child will be exposed to feeling of worries and stress that made them strongly dependent on their parents. In contrary, the presence of sibling helps to reduce that tendency.This is similar to seed beds. During the sprouting stage, the seeds grow better when planted in close pack (depend on species)And because of the competition, some will grow bigger than the othersBy planting them together, the weak sprouts can strengthen each othersBut after they grow long enough, having many growing in close pack will stutter their growth because of competition for nutrients. To avoid this, Gardeners usually prune the seeds, leaving only the best.Moreover, research showed that the sugary water excreted from their skin also helps to increase their immunity.Yua...
Yuaa...Can'ch shee anything no je...
Wead... choo home...YunyaaaaaaaaWiddle... shish
Whewe... are you...※ Excluding natural disaster like Onisan and FactoryMarikyan FlyWhen attacked by enemies (※), it's common to leave behind a just sacrifice.
With an easier target available, the group members have a better chance at scattering around.
This is called the "dilution effect".
This translation is a bit liberal
The meaning is more or less the same, but it's not really close to the original
If you have something better feel free to correct itThe fragile baby yukkuri die one by one.
Many deaths are caused by self-destruction.
At birth they possessed a sense of superiority, this self-confidence being the basis which leads to the death of the baby yukkuri.And due to seeing lots of same spec yus dieing infront of them the remaining living sisters' superiority sense will be suppressed.