unnatural nature-purple crow butterflies

The next generation has right to know , to change all the unnatural nature of the world !

In Taiwan, a large number of purple crow butterflies on a fixed path of movement every year , the process will not only go through the city , but also through the highway.

At Taiwan Yunlin, the students of an elementary school who capture and observe these purple crow butterflies every year , however , Does capture the purple crow butterflies and record the information for investigation and research natural or unnatural ? Let’s listen to the children!