1. Butterflies do exhibit migratory behaviors, moving in search of more favorable climates and food sources.
2. Historical records show numerous instances of butterfly migrations, with 1,273 events tallied by Williams in 1930.
3. It is known that 214 butterfly species worldwide have been observed to engage in migratory flight.
4. The size of butterfly migration groups varies, with some reaching into the millions.
5. Migration groups can be composed of a single species or a mix of several species.
6. The distances covered during migration can vary greatly, from regional flights to intercontinental and transoceanic crossings.
7. For instance, the Monarch butterfly has been recorded migrating from Mexico to Canada and Alaska, covering distances of up to 4,000 kilometers.
8. In China, records of butterfly migration are relatively scarce, with only five recorded instances from 1603 to 1933, all occurring in Yunnan and Guangxi.
9. The most recent large-scale migration was recorded in 1933, when an estimated tens of millions of white butterflies were seen in the sky near Kunming.
10. More recently, there have been reports of butterfly migrations, such as the one in the August 2, 1988 issue of the "Jiefang Daily" reporting on the phenomenon in Yulin County, Gansu.
11. Unfortunately, no physical specimens of migrating butterflies have been captured in China's butterfly migration history, leaving a significant gap in the scientific evidence.
12. The author urges butterfly enthusiasts across the country to document and record migrating butterflies when encountered, and to collect specimens if possible, to fill this void in China's butterfly migration history.详情
