Weird news - Young boys kill flamingo in zoo

The law says that young children cannot be penalized for their actions, although some countries do allow prosecution if the crime committed is particularly heinous, say for example, when they kill somebody or rape, or something similar. It gets more tricky when they indulge in behavior that is a portend of future bad behavior, but when they are so young, how does one penalize them ? It is a similar situation when a 6 year old kills a younger boy; at that young age, one cannot treat them as an adult and punish them, but at the same time, the crime can be horrendous.
In the present case, these 3 young boys, who obviously has thought about what they were planning on doing, climbed into a zoo and broke into the flamingo enclosure and started pelting them with stones and killed one of these beautiful and graceful birds. And probably the only thing that can be done is that the zoo can charge their parents for the damage that has happened, which should be atleast some kind of indicator to their parents that something needs to be done (link to article):

It was here that the pink-feathered bird was stoned and beaten to death Friday by a trio of young boys, zoo officials told The Washington Post, marking the latest in a string of attacks around the world on zoo animals. The boys, ages 5, 6 and 8, broke into the zoo and scaled a fence to reach the indoor flamingo exhibit. Then they attacked the 60-bird flock, throwing rocks and sticks at them. “First, they pelted them with stones and then one of them kicked it,” resident zoologist Jan Vašák told the Prague Morning. One of the birds, the 16-year-old father of eight, bled to death after suffering a broken leg bone and severed arteries. Another bird is recovering from serious but not life-threatening injuries, according to a zoo statement obtained by The Washington Post.

It was also lucky for the boys that they did not get into an animal enclosure which was not dangerous, else they would have been at the receiving end.